1.Hereditary vitreous degeneration muddy: report of ten cases.
Zhixin SHEN ; Enfang GAO ; Wenqing WENG ; Weiling LUO
Journal of Zhejiang University. Medical sciences 2016;45(6):636-640
		                        		
		                        			
		                        			Hereditary vitreous degeneration muddy is rare in clinic. Here we report ten cases (thirteen eyes) of hereditary vitreous degeneration muddy from two families. All patients presented with vitreous opacity, and the textures appeared tough and tensile. Two cases had concurrent detachment of rhegmatogenous retina. HE staining showed red changeableness, and methyl violet staining appeared purple. All patients received vitrectomy with traditional Chinese medicine treatment, and got satisfactory efficacy.
		                        		
		                        		
		                        		
		                        			Eye Diseases, Hereditary
		                        			;
		                        		
		                        			diagnosis
		                        			;
		                        		
		                        			pathology
		                        			;
		                        		
		                        			surgery
		                        			;
		                        		
		                        			therapy
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Medicine, Chinese Traditional
		                        			;
		                        		
		                        			Retinal Detachment
		                        			;
		                        		
		                        			diagnosis
		                        			;
		                        		
		                        			surgery
		                        			;
		                        		
		                        			Vitrectomy
		                        			;
		                        		
		                        			Vitreous Body
		                        			;
		                        		
		                        			pathology
		                        			;
		                        		
		                        			surgery
		                        			
		                        		
		                        	
2.Membrane peeling combined with intravitreal injection of bevacizumab for treatment of macular epiretinal membrane: analysis of 33 cases.
Zhiqiang LI ; Guoming ZHANG ; Kangjin SU ; Xiangmei SONG ; Ruyin TIAN ; Xunqing GU
Journal of Southern Medical University 2014;34(8):1207-1209
OBJECTIVETo assess efficacy of membrane peeling combined with intravitreal injection of bevacizumab in the treatment of macular epiretinal membrane.
METHODSFrom January, 2012 to June, 2013, 33 patients (33 eyes) with the diagnosis of macular epiretinal membrane underwent vitreous surgery and membrane peeling. The patients were randomly divided into intravitreal bevacizumab group (IVB group) and non-intravitreal bevacizumab group (non-IVB group). All the patients underwent standard three-port vitrectomy and peeling of epiretinal membrane, with intravitreal injection of 1.5 mg bevacizumab at the end of operation in IVB group. The best corrected visual acuity and optical coherence tomography (OCT) were examined before and after the treatment. The patients were followed up for 3-14 months (mean 6.5 months).
RESULTSMacular epiretinal membranes were successfully peeled during operation in all the patients without postoperative intraocular infection or bleeding. Fifteen eyes received vitrectomy combined with intravitreal injection of bevacizumab, and 18 underwent only vitreous operation and membrane peeling. At the end of the follow up, the visual acuity improved in 11 eyes (73.3%) in IVB group, as compared to 13 eyes (72.2%) in the non-IVB group (P=0.627). Central macular thickness decreased by 143∓62 µm in IVB group and by 96∓28 µm in non-IVB group, showing a significant difference between the two groups (t=5.564, P<0.01).
CONCLUSIONVitrectomy and membrane peeling combined with intravitreal injection of bevacizumab can promote the recovery of macular morphology but not visual function, and its clinical use still needs to be tested in a long-term and large-sample randomized controlled study.
Angiogenesis Inhibitors ; administration & dosage ; therapeutic use ; Antibodies, Monoclonal, Humanized ; administration & dosage ; therapeutic use ; Bevacizumab ; Epiretinal Membrane ; drug therapy ; pathology ; Humans ; Intravitreal Injections ; Postoperative Complications ; Tomography, Optical Coherence ; Treatment Outcome ; Visual Acuity ; Vitrectomy ; Vitreous Body ; surgery
3.Intravitreal Triamcinolone Acetonide Injection at the Time of Pars Plana Vitrectomy for Retained Lens Material.
Na Rae KIM ; Jun Ho YOON ; Sung Mo KANG ; Hee Seung CHIN
Korean Journal of Ophthalmology 2009;23(1):13-16
		                        		
		                        			
		                        			PURPOSE: To report the experiences at our institute of pars plana vitrectomy (PPV) in combination with intravitreal triamcinolone acetonide (IVTA) injection in patients with retained lens material after cataract surgery. METHODS: The medical records of patients who underwent PPV between January 2005 and December 2006 after complicated cataract surgery in which lens material was dropped into the vitreous cavity were reviewed retrospectively. RESULTS: Five eyes of five patients were treated by vitrectomy and removal of the dislocated lens material and were administered an adjuvant intravitreal injection of 4 mg triamcinolone acetonide at the end of surgery. IVTA administration induced a rapid improvement in vision within six weeks postoperatively. Final visual acuity was 20/32 or better in all patients. Inflammatory cystoid macular edema (CME) that existed preoperatively was promptly improved after IVTA. Intraocular pressure increased transiently in one patient. No procedure-related complications were observed. CONCLUSIONS: PPV with additional IVTA was successfully performed in five eyes with retained lens material and resulted in a marked resolution of vitreous inflammation, an improvement in CME and rapid visual recovery. The authors recommend that IVTA administration should be investigated more thoroughly as an adjunct during the management of retained lens material.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Cataract Extraction/adverse effects
		                        			;
		                        		
		                        			Device Removal/*methods
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Glucocorticoids/*administration & dosage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Injections
		                        			;
		                        		
		                        			Intraoperative Care/methods
		                        			;
		                        		
		                        			Lens Subluxation/pathology/*surgery
		                        			;
		                        		
		                        			Lenses, Intraocular/*adverse effects
		                        			;
		                        		
		                        			Macular Edema/etiology/pathology/*surgery
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Reoperation
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Time Factors
		                        			;
		                        		
		                        			Tomography, Optical Coherence
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Triamcinolone Acetonide/*administration & dosage
		                        			;
		                        		
		                        			Visual Acuity
		                        			;
		                        		
		                        			Vitrectomy/*methods
		                        			;
		                        		
		                        			Vitreous Body
		                        			
		                        		
		                        	
4.Comparison of Photocoagulation With Combined Intravitreal Triamcinolone for Diabetic Macular Edema.
Ho Young LEE ; Seung Yong LEE ; Jong Seok PARK
Korean Journal of Ophthalmology 2009;23(3):153-158
		                        		
		                        			
		                        			PURPOSE: To compare the efficacy between macular laser grid (MLG) photocoagulation and MLG plus intravitreal triamcinolone acetonide (IVTA; MLG+IVTA) therapy in diabetic macular edema (DME) patients. METHODS: A prospective, randomized, clinical trial was conducted of DME patients. A total of 60 eyes (54 patients) affected by DME were observed for a minimum of 6 months. Thirty eyes of 28 patients who received MLG treatment and 30 eyes of 26 patients who received the combined MLG+IVTA treatment were included in the study. Main outcome measures were BCVA and central macular thickness (CMT) as measured by optical coherence tomography (OCT) at 1, 3, and 6 months after treatment. Additionally, the authors examined retrospectively 20 eyes of 20 patients who were treated with only IVTA and compared with the 2 groups (MLG group and MLG+IVTA group). RESULTS: Baseline BCVA was 0.53+/-0.32 and CMT was 513.9+/-55.1 microm in the MLG group. At 1 and 3 months after treatment, the MLG group showed no significant improvement of BCVA and CMT, although there was significant improvement after 6 months. In the MLG+IVTA group, the baseline BCVA was 0.59+/-0.29 and CMT was 498.2+/-19.8 microm. After treatment, significant improvement of BCVA and CMT was observed at all follow-up time periods. When comparing the MLG group with the MLG+IVTA group, the latter had better results after 1 and 3 months, although at 6 months, there was no significant difference of BCVA and CMT between the 2 groups. Additionally, the IVTA group showed more improvement than the MLG group at 1 and 3 months but showed no significant difference at 6 months. In addition, the IVTA group showed no significant difference with the MLG+IVTA group at all follow-up time periods. CONCLUSIONS: For DME patients, the combined MLG+IVTA treatment had a better therapeutic effect than the MLG treatment for improving BCVA and CMT at the early follow-up time periods. IVTA treatment alone could be an additional alternative therapeutic option to combined therapy.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Diabetic Retinopathy/*drug therapy/pathology/physiopathology/*surgery
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Glucocorticoids/*administration & dosage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Injections
		                        			;
		                        		
		                        			*Laser Coagulation
		                        			;
		                        		
		                        			Macular Edema/*drug therapy/pathology/physiopathology/*surgery
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Postoperative Period
		                        			;
		                        		
		                        			Tomography, Optical Coherence
		                        			;
		                        		
		                        			Triamcinolone Acetonide/*administration & dosage
		                        			;
		                        		
		                        			Visual Acuity
		                        			;
		                        		
		                        			Vitreous Body
		                        			
		                        		
		                        	
5.Resolution of Severe Macular Edema in Adult Coats' Disease with Intravitreal Triamcinolone and Bevacizumab Injection.
Jong Hwa JUN ; Yu Cheol KIM ; Kwang Soo KIM
Korean Journal of Ophthalmology 2008;22(3):190-193
		                        		
		                        			
		                        			A 47 year old male patient visited our hospital with the chief complaint of deterioration of the visual acuity in the left eye. The fundus examination revealed thick hard exudates, multiple aneurysms and telangiectasias of the retinal vessels in the posterior pole. Fluorescein angiography demonstrated massive leakage over an area of the aneurysms. Optical coherence tomography (Stratus OCT; Zeiss-Humphrey, Dubin, CA) revealed diffuse and marked thickening of the retina. Laser photocoagulation was performed under the diagnosis of Coats' disease. However, the treatment could not be performed satisfactorily. On the first and 6th weeks, an intravitreal injection of bevacizumab and triamcinolone acetonide was administered, and laser photocoagulation was again attempted. The effectiveness of eachagent on retinal edema was evaluated at the follow-up performed at 1, 2, 5, 7, 10 weeks and 6 months after the injection. At one week after the intravitreal bevacizumab injection, there was no improvement. An intravitreal injection of triamcinolone acetonide was performed 6 weeks after the initial diagnosis,which resulted in a reduction in the thickness of the macular edema. Therefore, laser photocoagulation was performed sufficiently on telangiectasias. The follow-up at 6 months showed a relative increase in the macular edema, but there was reduced leakage from the telangiectasias compared with the previous angiograph.
		                        		
		                        		
		                        		
		                        			Angiogenesis Inhibitors/*therapeutic use
		                        			;
		                        		
		                        			Antibodies, Monoclonal/*therapeutic use
		                        			;
		                        		
		                        			Drug Therapy, Combination
		                        			;
		                        		
		                        			Fluorescein Angiography
		                        			;
		                        		
		                        			Glucocorticoids/*therapeutic use
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Injections
		                        			;
		                        		
		                        			Laser Coagulation
		                        			;
		                        		
		                        			Macular Edema/*drug therapy/etiology
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Retinal Diseases/complications/*drug therapy/surgery
		                        			;
		                        		
		                        			Retinal Vessels/pathology
		                        			;
		                        		
		                        			Telangiectasis/complications/*drug therapy/surgery
		                        			;
		                        		
		                        			Tomography, Optical Coherence
		                        			;
		                        		
		                        			Triamcinolone Acetonide/*therapeutic use
		                        			;
		                        		
		                        			Vascular Endothelial Growth Factor A/antagonists & inhibitors
		                        			;
		                        		
		                        			Vitreous Body
		                        			
		                        		
		                        	
6.OCT-guided Hyaloid Release for Vitreomacular Traction Syndrome.
Eun Jee CHUNG ; Young Ju LEW ; Hyo LEE ; Hyoung Jun KOH
Korean Journal of Ophthalmology 2008;22(3):169-173
		                        		
		                        			
		                        			PURPOSE: To evaluate the usefulness of OCT retinal mapping in determining the configuration of a vitreomacular adhesion and selecting a meridian for entry into the subhyaloid space in patients with vitreomacular traction syndrome. METHODS: Six consecutive patients (6 eyes) with vitreomacular traction syndrome underwent vitrectomy with peeling of posterior hyaloid. Ocular coherence tomography (OCT) retinal mapping was performed preoperatively. Access to the subhyaloid space was made by creating an opening with a 25 gauge needle at a location where the detached posterior hyaloid membrane was farthest from the retinal surface. The location was selected based on six preoperative meridional OCT scans. The posterior hyaloid was then gently peeled off in a circular fashion around the fovea with a micropick. Visual acuity and foveal thicknesses were measured before the operation and 3 months afterwards. RESULTS: After the operation, visual acuity improved and central macular thicknesses were reduced significantly in all six patients. The best corrected visual acuity improved from 0.4 to 0.75 with a mean increase by 3.5 lines on a Snellen chart 3 months after the operation. The mean foveal thickness was reduced from 406 micrometer to 241 micrometer. The restoration of foveal pit was observed in five patients. Neither intraoperative nor postoperative complications were observed during the follow up period. CONCLUSIONS: An OCT retinal mapping program is a valuable diagnostic tool in understanding the configuration of vitreomacular adhesion and planning the surgical approach for operating on vitreomacular traction syndrome.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Eye Diseases/diagnosis/etiology/*surgery
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Retinal Diseases/diagnosis/etiology/*surgery
		                        			;
		                        		
		                        			Syndrome
		                        			;
		                        		
		                        			Tissue Adhesions/etiology/surgery
		                        			;
		                        		
		                        			*Tomography, Optical Coherence
		                        			;
		                        		
		                        			Visual Acuity
		                        			;
		                        		
		                        			Vitrectomy/*methods
		                        			;
		                        		
		                        			Vitreous Body/pathology/*surgery
		                        			;
		                        		
		                        			Vitreous Detachment/complications
		                        			
		                        		
		                        	
7.Comparison of Combination Posterior Sub-Tenon Triamcinolone and Modified Grid Laser Treatment with Intravitreal Triamcinolone Treatment in Patients with Diffuse Diabetic Macular Edema.
Eun Jee CHUNG ; William R FREEMAN ; Stanley P AZEN ; Hyo LEE ; Hyoung Jun KOH
Yonsei Medical Journal 2008;49(6):955-964
		                        		
		                        			
		                        			PURPOSE: To compare the efficacy of posterior sub-Tenon's capsule triamcinolone acetonide injection combined with modified grid macular photocoagulation (PSTI + MP) with intravitreal triamcinolone acetonide (IVTA) injection in the treatment of diffuse diabetic macular edema (DME). MATERIALS AND METHODS: Forty eyes of 33 patients with diffuse DME were randomly allocated into either PSTI + MP (20 eyes) or IVTA (20 eyes). Best corrected visual acuity (VA) and foveal thickness were measured. RESULTS: The ETDRS scores at baseline were 25.2 +/- 13.6 (mean +/- SD) letters in the PSTI + MP group, whereas 21.7 +/- 16.3 letters in the IVTA group. The ETDRS scores improved by 33.2 +/- 15.9, 34.7 +/- 16.6 and 30.9 +/- 19.0 letters in the PSTI + MP group whereas by 30.9 +/- 15.4, 30.1 +/- 17.9 and 31.5 +/- 15.0 letters in the IVTA group at 1, 3, and 6 months after the treatments, respectively. The VA improved significantly at 1 month and 3 months after both treatments (all p < 0.02, paired t-test). The VA improvements were no longer significant at 6 months in either group. There were no statistically significant differences at any time points between the 2 groups (all p > 0.05, Student's t-test). The foveal thicknesses at baseline and 1, 3, and 6 months after the treatments were 382.8 +/- 148.3, 309.1 +/- 131.3, 319.3 +/- 93.3, 340.4 +/- 123.5micrometer (mean +/- SD) in the PSTI + MP group vs. 369.1 +/- 123.1, 241.4 +/- 52.3, 277.5 +/- 137.4, 290.2 +/- 127.9micrometer in the IVTA group, respectively. Pairwise comparisons revealed significant decrease in foveal thickness at 1 month (p = 0.01, paired t-test) for the PSTI + MP group, and at both 1 month (p < 0.001) and 3 months (p = 0.016) for the IVTA group. There were no statistically significant differences at any time points between the 2 groups (all p > 0.05, Student's t-test). In contrast to the PSTI + MP group, where no complications were noted, the elevation of intra-ocular pressure in 3 of 20 eyes (15%) and a significant increase in average cataract grading were observed in the IVTA group. CONCLUSION: PSTI + MP treatment provides significant improvement of vision in patients with diffuse DME over 3 months, and achieves outcomes comparable to those after IVTA treatment, however, with fewer complications.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Anti-Inflammatory Agents/administration & dosage
		                        			;
		                        		
		                        			Diabetic Retinopathy/*drug therapy/physiopathology/*surgery
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Fovea Centralis/pathology
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			*Laser Coagulation
		                        			;
		                        		
		                        			Macular Edema/complications/*drug therapy/physiopathology/*surgery
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Triamcinolone/*administration & dosage
		                        			;
		                        		
		                        			Visual Acuity
		                        			;
		                        		
		                        			Vitreous Body
		                        			
		                        		
		                        	
8.Laser Photocoagulation Combined with Intravitreal Triamcinolone Acetonide Injection in Proliferative Diabetic Retinopathy with Macular Edema.
Kyung Seek CHOI ; J K CHUNG ; Sang Hyun LIM
Korean Journal of Ophthalmology 2007;21(1):11-17
		                        		
		                        			
		                        			PURPOSE: To evaluate therapeutic effects and usefulness of a combination treatment of intravitreal injection of triamcinolone acetonide (IVTA) and panretinal photocoagulation (PRP) in patients with clinically significant macular edema secondary to proliferative diabetic retinopathy (PDR). METHODS: Visual acuity test, fundoscopy, fluorescein angiography, and optical coherence tomography (OCT) were taken in 20 patients (20 eyes) of macular edema and PDR. A combination of intravitreal injection of triamcinolone acetonide and PRP was performed in 10 patients (10 eyes) and a combination of focal or grid laser photocoaqulation and PRP in the remaining 10 eyes. The postoperative outcomes were compared between the two combination treatments by best corrected visual acuity (BCVA), tonometry, fluorescein angiography, and OCT at 2 weeks, 1, 2, and 3 months. RESULTS: Average BCVA (log MAR) significantly improved from preoperative 0.56+/-0.20 to 0.43+/-0.08 at 1 month (P=0.042) and it was maintained until 3 months after a combination of IVTA and PRP in 10 eyes (P=0.007). The thickness of fovea decreased from average 433.3+/-114.9 micrometer to average 279.5+/-34.1 micrometer at 2 weeks after combined treatment of IVTA and PRP (P=0.005), which was significantly maintained until 3 months, but there was a transient visual disturbance and no significant difference in thickness of the fovea before and after treatment in the groups with PRP and focal or grid laser photocoagulation. CONCLUSIONS: A combination of IVTA and PRP might be an effective treatment modality in the treatment of macular edema and PDR and prevent the subsequent PRP-induced macular edema result in visual dysfunction. In combination with PRP, IVTA might be more effective than focal or grid laser photocoagulation and PRP for reducing diabetic macular edema and preventing aggravation of macular edema without transient visual disturbance in patients requiring immediate PRP.
		                        		
		                        		
		                        		
		                        			Vitreous Body
		                        			;
		                        		
		                        			Triamcinolone Acetonide/*administration & dosage/therapeutic use
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Macular Edema, Cystoid/*drug therapy/etiology/*surgery
		                        			;
		                        		
		                        			*Laser Coagulation
		                        			;
		                        		
		                        			Injections
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Glucocorticoids/*administration & dosage/therapeutic use
		                        			;
		                        		
		                        			Diabetic Retinopathy/*complications
		                        			;
		                        		
		                        			Aged
		                        			
		                        		
		                        	
9.The Results of B-scan Ultrasonography in Different Positions after Vitrectomy and Gas Tamponade.
Sang Hyouk PARK ; Sung Jin LEE
Korean Journal of Ophthalmology 2007;21(2):100-105
		                        		
		                        			
		                        			PURPOSE: To determine the proper time frame in which to assess retinal attachment status and to evaluate the superior retinal attachment status by performing B-scan ultrasonography in different positions on patients who have undergone pars plana vitrectomy and gas tamoponade. METHODS: In this prospective study, 23 patients (23 eyes) who had undergone pars plana vitrectomy and gas tamponade were investigated between June 2005 and February 2006. SF6 (18%) was injected into the vitreous cavity of 15 eyes, and C3F8 (14%) was injected into the vitreous cavity of 8 eyes. At postoperative day 1, day 3, week 1, week 2, and week 4, B-scan ultrasonography was performed in the supine, sitting, prone, right decubitus, and left decubitus positions. RESULTS: The proper time to evaluate the retinal attachment status was three days post-operatively in 10 eyes (66.7%) with SF6 (18%) injections and two weeks post-operatively in six eyes (75%) that had C3F8 (14%) injections. The superior retinal attachment status can be evaluated from the summation of B-scan ultrasonography results performed in the right decubitus and left ducubitus positions. CONCLUSIONS: The proper time to evaluate the retinal attachment status was related to the degree of the gas absorption when performing B-scan ultrasonography after pars plana vitrectomy and gas tamponade. To evaluate the entire retina, it is useful to perform B-scan ultrasonograhy in the prone, right decubitus and left decubitus positions.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Aged, 80 and over
		                        			;
		                        		
		                        			Air
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Injections
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Postoperative Period
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Retina/*ultrasonography
		                        			;
		                        		
		                        			Retinal Diseases/*surgery/ultrasonography
		                        			;
		                        		
		                        			Time Factors
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Vitrectomy/*methods
		                        			;
		                        		
		                        			Vitreous Body
		                        			
		                        		
		                        	
10.Evaluation of the Efficacy of Vitrectomy for Persistent Diabetic Macular Edema and Associated Factors Predicting Outcome.
Su Jeong SONG ; Joon Hong SOHN ; Kyu Hyung PARK
Korean Journal of Ophthalmology 2007;21(3):146-150
		                        		
		                        			
		                        			PURPOSE: To evaluate the efficacy of vitrectomy for persistent diabetic macular edema after laser photocoagulation or intravitreal triamcinolone injections and to determine the demographic and ocular factors that influence functional and anatomical outcomes. METHODS: We retrospectively evaluated 55 eyes (51 patients) that had persistent diffuse macular edema after laser photocoagulation or intravitreal triamcinolone injections. We compared preoperative and postoperative best corrected visual acuity and macular thickness by Optical Coherence Tomography and investigated factors including patient's age, presence of vitreomacular traction, grade of diabetic retinopathy, and intraoperative internal limiting membrane removal that may influence the surgical results. RESULTS: The mean preoperative BCVA (log MAR) was 0.91+/-0.40 (0.8-1.2). The BCVA improved to 0.72+/-0.39 (0.3-1.2). The mean preoperative macular thickness was 440+/-130 (202-805) micrometer and the mean macular thickness decreased to 306+/-97 (136-580) micrometer postoperatively. The eyes showed statistically significant improvement in BCVA and central macular thickness (p<0.001). Preoperative better BCVA was associated with an improved postoperative visual acuity. (p=0.04). No other covariates were found to be statistically significant factors for prognosis of postoperative BCVA. CONCLUSIONS: In eyes with persistent diabetic macular edema after laser or IVTA injections, vitrectomy was effective for decreasing macular thickness and improvement of vision. The visual improvement after vitrectomy was associated with the preoperative better BCVA.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Diabetic Retinopathy/*surgery/therapy
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Injections
		                        			;
		                        		
		                        			Laser Coagulation
		                        			;
		                        		
		                        			Macular Edema/*surgery/therapy
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Retreatment
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Triamcinolone/administration & dosage/therapeutic use
		                        			;
		                        		
		                        			*Vitrectomy
		                        			;
		                        		
		                        			Vitreous Body
		                        			
		                        		
		                        	
            
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