No abstract available.
Retinal Detachment* ; Retinal Perforations* ; Retinaldehyde*

No Abstract Available.
Retinal Detachment* ; Retinal Perforations* ; Retinaldehyde*

No abstract available.
Retinal Perforations* ; Ulnar Neuropathies*

In 10 patients who complained of photopsia or "spots before their eyes", indirect ophthalmoscopy with scleral depressor was performed very carefully. In 7 out of 10 of these patients, we found retinal holes which were not easily detectable. Also, on 3 of these 7 patients, prophylactic cryopexy was performed. Therefore, we feel that indirect ophthalmoscopy should be done not only on patients who present these symptoms, but this examination should also be performed on asymptomatic patients as well.
Humans ; Ophthalmoscopy ; Retinal Perforations

Idiopathic macular holes are believed to arise from traction of the posterior vitreous membrane. Traditionally, macular holes have been considered as untreatable condition, but recently vitreous surgeries are being attempted to manage them. Pars plana vitrectomy in conjunction with separation of the posteror vitreous membrane and intraocular achieve visual improvement and anatomic reattachment in eyes with full thickness macular hole. A total of 9 eyes which included 2 eyes with stage 2 macular hole and 7 eyes with stage 4 macular hole underwent vitrectomy. The macular holes were successfully occluded in all 9 eyes and visual improvement of two lines or more was achieved in 6(67%) in which symptom duration was 3 months or less and/or hole size was 1/3DD or smaller. These results suggested that the full thickness macular holes would be surgically treatable lesions and better visual results can be expected in cases with shorter duration and smaller size.
Membranes ; Retinal Perforations* ; Traction ; Vitrectomy

No abstract available.
Glaucoma, Angle-Closure ; Retinal Perforations

Human ; Female ; Middle Aged ; RETINAL NEOVASCULARIZATION ; RETINAL NEOVASCULARIZATION/SURGERY ; RETINAL PERFORATIONS ; RETINAL PERFORATIONS/SURGERY ; HUMAN ; FEMALE

Effect of silicone oil in vitreous cavity of the rabbit was studied with electroretinogram. Pars plana vitrectomy was performed bilaterally in nine white rabbits, and they were divided into 3 groups. 1.6~1.7 cc of silicone oil was injected in right eye in 1st group, 0.8 cc of silicone oil was injected in right eye in 2 nd group, and 0.8~1.0 cc of silicone oil was injected in right eye after retinal tear was made in 3 rd group. Left eye in each group was used as a control. Photopic and scotopic electroretinographic studies were performed in both eye of rabbits preoperatively and postoperatively 2 days, 1 week, 2 weeks, 3 weeks, and 4 weeks. In each group, a and b-wave amplitude was decreased in silicone oil injected eye compared to control eye at postoperative 2 days, and was increased to normal amplitude at postoperative 4 weeks in both photopic and scotopic electroretinograms. Implicit time of a and b-wave was not affected in each group. Above results suggest that rabbit electroretinogram is not affected by intravitreal silicone oil until postoperative 4 weeks.
Rabbits ; Retinal Perforations ; Silicone Oils* ; Vitrectomy

PURPOSE: To evaluate if the presence of pathologic myopia could affect the result of macular hole surgery. METHODS: This study was a retrospective comparison of the results of macular hole surgery between a pathologic myopia group (11 eyes) and a non-pathologic myopia group (14 eyes). All patients had undergone PPV, ILM peeling and C3F8 (20%) gas temponade. BCVA, IOP and OCT findings were evaluated preoperatively and at 6 months after surgery. Postoperative BCVA, IOP and macular hole closure were compared between each groups. RESULTS: The only statistically significant preoperative parameter between the groups was axial length (p < 0.001). Postoperative BCVA was lower in the pathologic myopia group, but the difference was not statistically significant. The rate of macular hole closure was statistically significant higher in the non-pathologic myopia group (p < 0.001). CONCLUSIONS: The presence of pathologic myopia may negatively affect the result of macular hole surgery.
Humans ; Myopia ; Retinal Perforations ; Retrospective Studies

For the evaluation of preoperative and postoperative factors effecting the results of vitrectomy as a treatment of full thickness macular hole, we estimated the three dimensional morphology of macular hole using the HRT [Heidelberg retina tomography]and investigated every patient's history and operation method. Pars plana vitrectomy, epiretinal and internal limiting membrane removal, and C3F8 injection were performed in 19 patients[19 eyes]with full thickness macular holes. Anatomic success was seen in 12 eyes[63.2%]and was statistically related with preoperative hole area, volume and depth. Functional success was seen in 6 eyes[31.6%]and was significantly related with preoperative hole volume and depth, marginal detachment area and volume, hole diameter and hole area. In addition, anatomic success was statistically related with internal limiting membrane removal[p<0.01], stage and preoperative visual acuity [p<0.05]. Functional success was significantly related with preoperative visual acuity, internal limiting membrane removal[p<0.01], stage and duration of the disease[p<0.05]. We conclude that preoperative HRT is a useful method in deciding the operative indications and also in predicting the outcomes.
Membranes ; Retina* ; Retinal Perforations* ; Visual Acuity ; Vitrectomy