1.Comparative Study of Clinical Outcomes between 2 Types of 3-Piece Aspheric Intraocular Lenses.
Junwon LEE ; Jae Hun KIM ; Eung Kweon KIM ; Tae Im KIM
Journal of the Korean Ophthalmological Society 2012;53(1):43-48
PURPOSE: To compare postoperative clinical outcomes between 2 types of 3-piece aspheric intraocular lenses. METHODS: Uncorrected visual acuity, best corrected visual acuity, total ocular and internal ocular aberration including higher-order aberrations and spherical aberration, and modulation transfer functions were compared 6 months after cataract surgery between eyes implanted with TECNIS ZA9003 (group 1) and HOYA PC-60AD (group 2) in 30 and 28 eyes, respectively, In addition, the differences between postoperative spherical equivalent and preoperative target refractive errors were analyzed. RESULTS: Clinical outcomes showed no significant differences between both groups including visual acuities, high order aberrations, and modulation transfer function. In both groups, postoperative refractive errors were more of a myopic state than preoperative estimated target refraction. The myopic refractive error between both groups showed no significant difference (-0.26 vs. -0.42 diopter, p = 0.75). CONCLUSIONS: The newly developed 3-piece aspheric IOL, HOYA PC-60AD shows similar clinical outcomes compared with the widely used 3-piece IOL TECNIS ZA9003.
Cataract
;
Eye
;
Lenses, Intraocular
;
Refractive Errors
;
Visual Acuity
2.Outcomes of Cranioplasty Using Autologous Bone or 3D-Customized Titanium Mesh Following Decompressive Craniectomy for Traumatic Brain Injury: Differences in Complications
Junwon KIM ; Jang Hun KIM ; Jong Hyun KIM ; Taek Hyun KWON ; Haewon ROH
Journal of the Korean Society of Traumatology 2019;32(4):202-209
PURPOSE:
Cranioplasty (CP) is often required for survival after decompressive craniectomy. Several materials, including autologous bone and various artificial materials, have been introduced for CP, but it remains unclear which material is best for CP. This study aimed to explore differences in complications between patients who underwent CP using an autologous bone flap versus a three-dimensional (3D) titanium mesh and to identify significant risk factors for post-CP complications.
METHODS:
In total, 44 patients were enrolled in this study and divided into two groups (autologous bone vs. 3D titanium mesh). In both groups, various post-CP complications were evaluated. Through a comparative analysis, we aimed to identify differences in complications between the two groups and, using binary logistic analysis, to determine significant factors associated with complications after CP.
RESULTS:
In the autologous bone flap group, there were three cases of surgical infection (3/24, 12.5%) and 11 cases of bone flap resorption (BFR) (11/24, 45.83%). In the 3D titanium mesh group, there was only one case of surgical infection (1/20, 5%) and 11 cases of various complications, including mainly cosmetic issues (11/20, 55%). A subgroup risk factor analysis of CP with an autologous bone f lap showed no risk factors that predicted BFR with statistical significance, although a marginal association was found between larger bone flaps and BFR (odds ratio [OR]=1.037, p=0.090). In patients treated with a 3D titanium mesh, multivariate analysis revealed that only the existence of a ventriculo-peritoneal shunt system was strongly associated with overall post-CP complications (OR=18.66, p=0.021).
CONCLUSIONS
Depending on which material was used, different complications couldoccur, and the rate of complications was relatively high in both groups. Hence, thematerial selected for CP should be selected based on individual patients' conditions.
3.Lateral Decubitus Position for Pediatric Nd:YAG Laser Capsulotomy under General Anesthesia
Jung Dong KIM ; Hyun Goo KANG ; Tae Young KIM ; Junwon LEE ; Min KIM
Journal of the Korean Ophthalmological Society 2021;62(7):998-1002
Purpose:
To report a successful case of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser capsulotomy performed in a noncompliant pediatric patient using the lateral decubitus position and a conventional slit-lamp-based laser system under general anesthesia.Case summary: Progression of a thick posterior capsular opacity with associated vision loss (best-correct visual acuity of 0.1) was detected in a nine-year-old child with a past history of cataract surgery in his right eye. Diagnosed with pediatric uveitis at the age of five, he had been treated previously using a combination of topical and systemic corticosteroids, which led to the development of the cataract and subsequent surgery 16 months later. Severe photophobia prevented outpatient-based laser treatment, and the patient underwent our modified procedure. Under general anesthesia, the patient was placed in a lateral decubitus position with the use of a long intubation tube. The height of the bed and table-based laser system was adjusted so as to minimize strain when positioning the child’s head. Successful laser capsulotomy was performed within 10 minutes, and the entire anesthesia time was less than 30 minutes. The patient experienced immediate improvement in symptoms, showing a visual acuity of 1.0, which has been sustained as of his most recent visit, 3 months postoperatively. The patient experienced no ocular or anesthesia- related complications.
Conclusions
Nd:YAG laser capsulotomy performed by careful positioning (lateral decubitus) under general anesthesia is a viable strategy for the safe and efficient removal of posterior capsular opacities in children with poor compliance.
4.Lateral Decubitus Position for Pediatric Nd:YAG Laser Capsulotomy under General Anesthesia
Jung Dong KIM ; Hyun Goo KANG ; Tae Young KIM ; Junwon LEE ; Min KIM
Journal of the Korean Ophthalmological Society 2021;62(7):998-1002
Purpose:
To report a successful case of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser capsulotomy performed in a noncompliant pediatric patient using the lateral decubitus position and a conventional slit-lamp-based laser system under general anesthesia.Case summary: Progression of a thick posterior capsular opacity with associated vision loss (best-correct visual acuity of 0.1) was detected in a nine-year-old child with a past history of cataract surgery in his right eye. Diagnosed with pediatric uveitis at the age of five, he had been treated previously using a combination of topical and systemic corticosteroids, which led to the development of the cataract and subsequent surgery 16 months later. Severe photophobia prevented outpatient-based laser treatment, and the patient underwent our modified procedure. Under general anesthesia, the patient was placed in a lateral decubitus position with the use of a long intubation tube. The height of the bed and table-based laser system was adjusted so as to minimize strain when positioning the child’s head. Successful laser capsulotomy was performed within 10 minutes, and the entire anesthesia time was less than 30 minutes. The patient experienced immediate improvement in symptoms, showing a visual acuity of 1.0, which has been sustained as of his most recent visit, 3 months postoperatively. The patient experienced no ocular or anesthesia- related complications.
Conclusions
Nd:YAG laser capsulotomy performed by careful positioning (lateral decubitus) under general anesthesia is a viable strategy for the safe and efficient removal of posterior capsular opacities in children with poor compliance.
5.Is Stent-Assisted Coil Embolization for the Treatment of Ruptured Blood Blister-Like Aneurysms of the Supraclinoid Internal Carotid Artery Effective? : An Analysis of Single Institutional Experience with Pooled Data
Haewon ROH ; Junwon KIM ; Sang-il SUH ; Taek-Hyun KWON ; Wonki YOON
Journal of Korean Neurosurgical Society 2021;64(2):217-228
Objective:
: Given the high risk of rebleeding and recurrence of blood blister-like aneurysms (BBAs), we treated ruptured BBAs of the internal carotid artery (ICA) with stent-assisted coil embolization (SAC). This study aimed to evaluate the efficacy and safety of SACs.
Methods:
: We retrospectively reviewed clinical and radiological data from eight patients with ruptured BBAs of the supraclinoid ICA. The modified Rankin Scale (mRS) was used to assess clinical outcomes, while radiological outcomes were evaluated on angiographs. For a pooled analysis, data from literature reporting the outcomes of ruptured BBAs treated with SAC were collected and analyzed in conjunction with our data.
Results:
: In our cohort, the mean Raymond classification score was 1.57±0.53 immediately after initial endovascular treatment. There were no perioperative complications or rebleeding events during the follow-up period. The mean mRS score at patient discharge was 1.00±0.81 and improved to 0.28±0.48 by the last follow-up day. The recurrence rate was 25% with an asymptomatic presentation and successful treatment with multiple stent insertion. Pooled analysis of 76 cases of SAC revealed a complete occlusion rate immediately after treatment of 54.8%, rebleeding rate 7.94%, and recurrence rate 24.2%. Good clinical outcomes with mRS score 0–2 were observed in 89.9% by the last clinical follow-up. Total mortality rate was 7.7%.
Conclusion
: This treatment appears to not only minimize the hemodynamic burden on the fragile dome specific to this type of aneurysm, but also provides an opportunity for safe and effective treatment in recurrent cases.
6.Deep Vein Thrombosis Following Prolonged Prone Position Maintenance after Vitrectomy for Rhegmatogenous Retinal Detachment
Hansang LEE ; Chul Hee LEE ; Eun Young CHOI ; Junwon LEE ; Min KIM
Journal of the Korean Ophthalmological Society 2023;64(4):355-358
Purpose:
We report a rare case of deep vein thrombosis and pulmonary embolism that occurred following 2 weeks in the prone position after a trans pars plana vitrectomy with gas tamponade to treat rhegmatogenous retinal detachment.Case Summary: A 49-year-old man without a remarkable medical history visited our clinic complaining of gradual vision loss on the inferior side of the left eye. In fundus examinations, rhegmatogenous retinal detachment involving the macula with multiple tears was noted. After trans pars plana vitrectomy with gas tamponade, the patient was encouraged to maintain a prone position for retinal reattachment. However, after 2 weeks in the prone position, he complained of right calf pain and swelling. The department of cardiovascular surgery was consulted immediately and deep vein thrombosis and pulmonary embolism were diagnosed. After deep vein thrombectomy and anticoagulation therapy, the lower extremity symptoms improved and the patient was stable during follow-up with a well attached retina.
Conclusions
When prolonged prone positioning after retina surgery is necessary, careful monitoring for the possibility of deep vein thrombosis and pulmonary embolism is required, especially in high-risk patients.
7.Surgical Treatment of a Large Choroidal Melanoma
Hansang LEE ; Seung Min LEE ; Su-Jin SHIN ; Eun Young CHOI ; Junwon LEE ; Min KIM
Journal of the Korean Ophthalmological Society 2023;64(5):445-450
Purpose:
We report successful eyeball-preserving management of a patient with a large choroidal melanoma. We combined partial lamellar sclerouvectomy (PLSU) with ruthenium (Ru)-106 plaque brachytherapy.Case summary: A 48-year-old woman with a history of asthma visited our clinic with a chief complaint of gradual loss of vision at the nasal side of her right eye (best-corrected visual acuity 0.6). Fundus examination revealed a mushroom-shaped, dark choroidal mass 17.1 mm (basal diameter) × 14.2 mm (apical height). There was no evidence of distant metastasis. To remove the tumor while preserving the eyeball, we combined PLSU and simultaneous Ru-106 plaque brachytherapy with the patient under hypotensive general anesthesia. At 6 weeks postoperatively, trans pars plana vitrectomy with silicone oil injection was performed to remove the vitreous hemorrhage and treat the retinal detachment. Intravitreal bevacizumab (Avastin, Genentech Inc., San Francisco, CA, USA) (0.05 mL, 1.25 mg) was injected every 2 months to prevent the development of radiation retinopathy. No residual tumor, recurrence, or distant metastasis was noted during follow-up of 2 years. The patient was stable with no ocular complications at her last visit (2 years postoperatively).
Conclusions
Contrary to what we expected and despite the surgical difficulties, PLSU combined with Ru-106 plaque brachytherapy is a useful eyeball-preserving strategy even when encountering a very large choroidal melanoma (diameter > 16 mm and apical height > 10 mm). Such a melanoma was previously believed to be treatable only via enucleation.
8.Closed-loop Scleral Fixation with 4-eyelet Intraocular Lens Implantation for Aphakia: Clinical Outcomes
Jung Dong KIM ; Junwon LEE ; Jong Yun YANG ; Eun Young CHOI
Journal of the Korean Ophthalmological Society 2023;64(11):1041-1047
Purpose:
We present a modified, closed-loop scleral fixation technique. We inserted a 4-eyelet intraocular lens (IOL) into the anterior chamber prior to fixation. We investigated the clinical results.
Methods:
We retrospectively reviewed 39 eyes (39 patients) that underwent modified four-point scleral fixation of an inserted lens in our center from May 2019 to June 2022. The surgical procedure features conjunctival peritomy, 4-eyelet IOL insertion, eyeball penetration using a 9-0 polypropylene needle, eyelet placement using an ab externo technique to form a continuous loop, centering of the optic, and tying of a knot. We compared preoperative and 6-month postoperative changes in best-corrected visual acuity (BCVA), intraocular pressure, and refraction errors, and described postoperative complications.
Results:
The mean patient age was 62 years. The indications for surgery included complicated cataracts (20.5%), aphakia (20.5%), staged surgery for complicated cataract (12.8%), non-traumatic IOL dislocation (30.8%), traumatic IOL dislocation (12.8%), and crystalline lens dislocation (5.1%). The postoperative BCVA (0.40 logarithm of the minimum angle of resolution [logMAR]) was significantly better than the preoperative BCVA (0.69 logMAR) (p = 0.018). The postoperative spherical equivalent and the target diopter measurement were in high agreement (p = 0.002, intraclass correlation coefficient = 0.616). All of ocular hypertension (7.7%), hypotony (5.1%), bullous keratopathy (5.1%), and macular edema (5.1%) were noted, but 78% of the conditions improved with short-term medication. There was no re-dislocation of a fixated IOL.
Conclusions
Our surgical technique simply and rapidly treats aphakia. Optic repositioning was easy, the IOL stability high, and the risk of complications during IOL fixation low.
9.Therapeutic Efficacy of Spironolactone for Central Serous Chorioretinopathy
Jae Yong HAN ; Yong Joon KIM ; Eun Young CHOI ; Junwon LEE ; Ji Hwan LEE ; Min KIM ; Suk Ho BYEON ; Sung Soo KIM ; Christopher Seungkyu LEE
Yonsei Medical Journal 2022;63(4):365-371
Purpose:
To evaluate the therapeutic effects and safety of oral spironolactone (SPRL) in patients with central serous chorioretinopathy (CSC).
Materials and Methods:
The medical records and imaging data of patients diagnosed with CSC and treated with SPRL were retrospectively reviewed. Central macular thickness (CMT), subretinal fluid (SRF) height, subfoveal choroidal thickness (SFCT), and best-corrected visual acuity (BCVA) at baseline, at 1, 3, and 6 months, and at the last visit after the treatment were analyzed.
Results:
In total, 103 patients with 107 eyes were included. The mean age of the patients was 51.5±9.3 years, and 77 (72.0%) were male. The mean follow-up duration was 48.6±40.2 weeks. The mean duration of oral SPRL therapy was 15.5±13.4 weeks. CMT, SRF height, and SFCT improved significantly at 1, 3, and 6 months after SPRL therapy and at the last follow-up. BCVA, however, showed no significant change at any time point. The rate of complete resolution of SRF at 1 month was higher in those with chronic CSC than in those with acute CSC (21.1% vs. 6.0%, respectively). Recurrence occurred in 14 (13.1%) eyes after the complete resolution of SRF. Older age (p=0.001), a greater number of previous intravitreal bevacizumab injections (p=0.006), and poor initial visual acuity (p=0.048) were associated with recurrence. No permanent adverse effects were observed.
Conclusion
Oral SPRL showed therapeutic benefits in patients with CSC in terms of SRF resolution, but relatively frequent recurrence was observed, especially in older patients.
10.In vivo dosimetry and acute toxicity in breast cancer patients undergoing intraoperative radiotherapy as boost.
Jason Joon Bock LEE ; Jinhyun CHOI ; Sung Gwe AHN ; Joon JEONG ; Ik Jae LEE ; Kwangwoo PARK ; Kangpyo KIM ; Jun Won KIM
Radiation Oncology Journal 2017;35(2):121-128
PURPOSE: To report the results of a correlation analysis of skin dose assessed by in vivo dosimetry and the incidence of acute toxicity. This is a phase 2 trial evaluating the feasibility of intraoperative radiotherapy (IORT) as a boost for breast cancer patients. MATERIALS AND METHODS: Eligible patients were treated with IORT of 20 Gy followed by whole breast irradiation (WBI) of 46 Gy. A total of 55 patients with a minimum follow-up of 1 month after WBI were evaluated. Optically stimulated luminescence dosimeter (OSLD) detected radiation dose delivered to the skin during IORT. Acute toxicity was recorded according to the Common Terminology Criteria for Adverse Events v4.0. Clinical parameters were correlated with seroma formation and maximum skin dose. RESULTS: Median follow-up after IORT was 25.9 weeks (range, 12.7 to 50.3 weeks). Prior to WBI, only one patient developed acute toxicity. Following WBI, 30 patients experienced grade 1 skin toxicity and three patients had grade 2 skin toxicity. Skin dose during IORT exceeded 5 Gy in two patients: with grade 2 complications around the surgical scar in one patient who received 8.42 Gy. Breast volume on preoperative images (p = 0.001), ratio of applicator diameter and breast volume (p = 0.002), and distance between skin and tumor (p = 0.003) showed significant correlations with maximum skin dose. CONCLUSIONS: IORT as a boost was well-tolerated among Korean women without severe acute complication. In vivo dosimetry with OSLD can help ensure safe delivery of IORT as a boost.
Breast Neoplasms*
;
Breast*
;
Cicatrix
;
Female
;
Follow-Up Studies
;
Humans
;
Incidence
;
Luminescence
;
Mastectomy, Segmental
;
Radiotherapy*
;
Seroma
;
Skin