摘要:

The objective of this prospective study was to ascertain whether scatter argon laser photocoagulation to the involved sector in major branch retinal vein occlusion and ischemic hemicentral retinal vein occlusion (a) prevents development of retinal and/or optic disk neovascularization and vitreous hemorrhage, and (b) affects visual acuity, visual fields and macular retinal lesions. The study was done in 271 eyes allocated to either treated (n = 61 eyes) or untreated (n = 210) groups. In this study, on an average follow-up of 3.6 years, the laser treatment (1) significantly reduced the risk of development of retinal neovascularization and vitreous hemorrhage, (2) did not affect the visual acuity and macular retinal lesions, and (3) produced a significant worsening in the peripheral visual fields compared to the untreated eyes. In view of our findings, we recommend that argon laser photocoagulation treatment should be given only when neovascularization is seen and not otherwise, because in the latter case, its detrimental effects may outweigh its beneficial ones.

ISSN:0030-3755    

DOI:10.1159/000310354

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

To investigate the influence of body position on visual field results, a ‘swivel arm perimeter’ was built, based on a modified Octopus 1-2-3. Here, the measuring unit was detached from the control unit and mounted on a swivel arm, allowing its movement in all directions. The first results obtained with this device have indicated that its development was worthwhile.

ISSN:0030-3755    

DOI:10.1159/000310355

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

Three patients with choroidal melanomas of the posterior pole were treated with proton beam irradiation. One tumor was mediumsized, two were large-sized. Two of the three eyes were functionally single eyes. 60 CGE (cobalt gray equivalents) was delivered in 4 equal treatments during 4 consecutive days. The minimum follow-up period for each patients is 4 years, the average time 4.8 years. Functionally, we lost both eyes with the large-sized tumors owing to severe radiogenic side effects; the eye containing the largest tumor had to be enucleated after 48 months because of phthisis bulbi. No metastases have developed up to now.

ISSN:0030-3755    

DOI:10.1159/000310356

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

Elschnig’s spots were observed in 3 patients with severe hypertension. Extensive choroidal depigmentation as well as hyper-pigmentation surrounded by depigmentation were scattered over the whole retina. At the periphery, Siegrist’s bead string pigmentation was present (first patient). Despite the massive chorioretinal changes, only slight functional changes were evident. The retinal hypertensive changes predominated over choroidal vascular lesions (second patient). Elschnig’s spots were present almost only unilaterally (third patient). Choroidal vascular changes predominated in the presence of acute hypertension (first and third patient), whereas retinal vascular changes were the result of a more gradual onset of hypertension (second patient).

ISSN:0030-3755    

DOI:10.1159/000310357

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

A group of patients with empty sella syndrome (ESS) and visual field defect with or without visual loss has been examinated with standardized echography and ophthalmodynamometric examination. The optic nerve thickness has been evaluated with standardized echography; the pressure of the central retina artery has been evaluated with ophthalmodynamometric examination with or without compression on the external carotid. Our results point out two different pathogeneses in the ESS: vascular defects or irregular endocranial hypertension.

ISSN:0030-3755    

DOI:10.1159/000310358

出版商:S. Karger AG    

年代:1993

数据来源: Karger

ISSN:0030-3755    

DOI:10.1159/000310359

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

In 20 subjects, we recorded the pattern-reversal visual evoked cortical potential (VECP) over a period of 30 min. We could not find any remarkable alterations of the peak times, they were unchanged over the time. During the first 10 min, the amplitudes showed a clear tendency to decrease if one evaluated the averaging value of the whole group. After this time, there were no significant changes. But we learned a quite different behavior of amplitudes evaluating the record of each subject. We found 5 types of different behavioral modulated responses. The problems of long-term investigation are sophisticated and need further investigation to learn which different factors have an impact on VECP. From a clinical point of view, a long-term investigation shows no relevant potential alterations.

ISSN:0030-3755    

DOI:10.1159/000310360

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

Ten patients underwent extraocular muscle surgery with an intraoperative suspension-recession technique for diplopia induced by vertical strabismus in thyroid myopathy. The average ratio of the reduction of vertical deviation to the amount of surgery was 1.8°/mm (range, 1.0°/mm–2.8°/mm). Eight (80%) patients had single binocular vision restored in the primary position without prism or compensatory torticollis after surgery. One patient who showed evidence of abnormal thyroid function at surgery developed an overcorrection postoperatively.

ISSN:0030-3755    

DOI:10.1159/000310361

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

The action of β-blockers on papillary blood flow is quite controversial. Because there is a known relationship between digital and ocular vasospasm, we measured digital blood flow by laser-Doppler methods as a peripheral index of ocular vasospastic disorders. Thus, the effects of cardioselective (betaxolol) and noncardioselective (timolol) β-blockers on peripheral blood flow in healthy volunteers were evaluated. Neither β-blocker lowered peripheral blood flow; for betaxolol, there was even a significant increase compared to no medication. No significant differences between betaxolol and timolol were seen.

ISSN:0030-3755    

DOI:10.1159/000310362

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

Here we report a case of choroidal malignant melanoma in a 10-month-old child, who has café-au-lait spots on the abdomen. She had suffered from enlargement of the eyeball since 5 months old due to a tumor-like mass in the vitreous cavity. It was examined with slitlamp biomicroscopy, indirect ophthalmoscopy, orbit computerized tomography and magnetic resonance imaging (MRI). Retinoblastoma or neurofibroma was suspected from the clinical diagnosis, and from the tomographic point of view, it could be choroidal hemangioma, however, the MRI study, unexpectedly suggested the possibility of choroidal malignant melanoma, and it could be confirmed by the results of a histopathologic examination.

ISSN:0030-3755    

DOI:10.1159/000310363

出版商:S. Karger AG    

年代:1993

数据来源: Karger