摘要:

We retrospectively studied the value of iris fluorescein angiography in predicitng benignity or malignancy in 10 cases of ciliary body melanoma with iris extension. No correlation between fluorescein-angiographic appearance and histopathologic features was observed. Fluorescein angiography adds little to the management of ciliary body melanomas with iris extension.

ISSN:0030-3755    

DOI:10.1159/000310128

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

The modification of corneal sensitivity, accommodation, pupillary diameter and endothelial cell density after argon versus krypton panretinal photocoagulation were studied prospectively in 88 eyes of 64 diabetic patients with proliferative diabetic retinopathy, randomized for one of the two laser treatments. In both groups a marked internal ophthalmoplegia and reduction of corneal sensitivity occurred after laser photocoagulation. At no time, 2, 90 and 180 days after PRP, were these parameters significantly different. Endothelial cell loss was non significantly greater in the krypton group. The results indicated that the side effects commonly observed on the anterior segment after PRP are comparable using argon or krypton lasers.

ISSN:0030-3755    

DOI:10.1159/000310129

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

This study comprises 53 eyes, divided into two groups A and B, with proliferative diabetic retinopathy which were treated with panretinal photocoagulation (PRP). Its purpose is to investigate the alterations in the central 15° and 30° of the visual field and in each quadrant separately. In both groups A and B, PRP covered the periphery and midperiphery. In group A, it stopped 2 disc diameters (DD) from the upper temporal and lower margin of the fovea including the papillomacular bundle, while in group B, PRP stopped 3 DD from the upper temporal and lower margin of the fovea and 1 DD of the nasal margin of the optic disc. The investigation revealed, in group B after PRP, an improvement of the retinal sensitivity in the central 15° of the visual field (p < 0.01). In the 30° of the visual field a deterioration after PRP was noted in both groups A and B, the deterioration being however much more prominent in group A. Comparing the results between groups B and A after PRP, a difference in the retinal sensitivity in favour of group B at 15° and 30° of the visual field was found. As regards regression of neovascularization and visual acuity, no statistically significant difference has been observed between the two groups.

ISSN:0030-3755    

DOI:10.1159/000310130

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

A 49-year-old man developed exudative retinal detachment 9 months after uncomplicated scleral buckling surgery in the left eye. The subretinal exudates were strictly localized along the buckle and showed remarkable response to steroid. The cause would be noninfectious inflammation like posterior scleritis, triggered by the buckle itself or its associated factors. It is important to note that subretinal exudates long after scleral buckling can occur in consequence of steroid-responsive inflammation as well as insidious bacterial or fungal infection described previously.

ISSN:0030-3755    

DOI:10.1159/000310131

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

The injection of sulfur hexafluoride (SF6) or perfluoropropane (C3F8) was used as a method of internal tamponade in 43 eyes affected by retinal detachment due to macular hole. The technique of ocular hypotension prior to gas injection varied according to the characteristics of each case, using vitrectomy and SF6 30% in 8 cases (group 1), fluid-gas (SF6) exchange through the pars plana in 10 cases (group 2) paracentesis of the anterior chamber prior to injection of SF6 in 12 cases (group 3) and injection of C3F8 without drainage in 13 cases (group 4). Retinal reattachment was initially achieved in 87 (group 1), 83.3 (group 2), 100 (group 3) and 92.3% (group 4), but 4 recurrences yielded a 6-month follow-up cure of 75 (group 1), 75 (group 2), 91 (group 3) and 84% (group 4). Postoperative complications included proliferative vitreoretinopathy (7%), endophthalmitis (2.3%) and subretinal hemorrhage (2.3%). The use of intraocular gas tamponade appears to be a procedure with an acceptable complication rate in the treatment of retinal detachment due to macular hole. This study suggests the use of paracentesis and SF6 in phakic eyes, C3F8 in aphakic eyes and vitrectomy plus 30% SF6 in eyes with proliferative vitreoretinopathy or vitreoretinal traction adjacent to the macular hole.

ISSN:0030-3755    

DOI:10.1159/000310132

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

Visual disturbance in 11 patients with melanocytoma of the optic disk was analyzed. Goldmann visual field examination showed enlargement of Mariotte’s blind spot in 7 of 10 patients (70%) and visual field defect or depression in 7 patients (70%). In 6 of the 7 patients with visual field defect of depression (86%), the portion of visual field damage corresponded with the location of the tumor and retinal nerve fiber bundle defect. In 1 patient, sudden loss of visual acuity occurred, presumably due to anterior ischemic optic neuropathy induced by melanocytoma.

ISSN:0030-3755    

DOI:10.1159/000310133

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

We measured retinal threshold sensitivity via automated computerized static perimetry in predetermined meridians in euglycemic diabetic subjects and in the same subjects during insulin-induced hypoglycemia. During periods of reduced blood glucose levels, decreased retinal sensitivity, most marked in temporal meridians, was observed.

ISSN:0030-3755    

DOI:10.1159/000310134

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

The introduction of Goldmann perimetry standardized measuring conditions as much as possible. In spite of this, it had been possible for the perimetrist to influence the results of perimeter measurements. The introduction of computer-controlled perimetry, however, has largely eliminated the influence of the investigator on perimetry results. Nevertheless, the interpretation of a perimetric result in the everyday clinical situation is still extensively subjectively coloured and is liable to vary, depending on the doctor carrying it out. The OCTOPUS Programm G1 was introduced a few years ago and used above all for glaucoma. This program greatly simplified visual field assessement thanks to its visual field indices. The indices make it possible to compare visual field results with those of a normal population. The present introduction of the OCTOSMART program represents a further step forward. This program analyses measured visual fields with the aid of standardized, statistical criteria based on a large, normal value study. This analysis standardizes and thereby simplifies the interpretation of visual field results. This study compares the outcome of the OCTOSMART program with visual field interpretations by eye doctors.

ISSN:0030-3755    

DOI:10.1159/000310135

出版商:S. Karger AG    

年代:1990

数据来源: Karger

ISSN:0030-3755    

DOI:10.1159/000310136

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

The ultracytochemical localization of Mg2+-ATPase and Ca2+-ATPase activities was determined in rat retinal capillary endothelial cells. The predominant localization of both enzymatic activities was on the antiluminal cell membranes in all retinal capillaries. The two enzymes investigated showed a positive reaction on the pinocytic vesicles of capillary endothelial cells. Differences in the intensity of enzyme activities of the luminal and antiluminal plasma membranes may reflect the polarity in the capillary endothelial cells and relate to blood-retinal barrier mechanisms.

ISSN:0030-3755    

DOI:10.1159/000310137

出版商:S. Karger AG    

年代:1990

数据来源: Karger