摘要:

We describe herein a new trial to stimulate trabecular meshwork tissue and thereby increase outflow facility. The efficacy of our laser trabeculostimulation (LTS) was compared with that of conventional laser trabeculoplasty (LTP) since LTP causes shrinkage and cicatrization of the meshwork tissue, thus limiting the reduction of postoperative intraocular pressure (IOP). The mean preoperative IOP of 40 eyes was 24.9 ± 6.8 mm Hg (mean ± SD). LTS was applied with a 50-μm spot, a power setting of 50 mW and an exposure time of 1 s. With LTS, the IOP decreased but then increased afterward. Results indicate that low power (50 m W) is effective if used for a longer duration. Our LTS can be applied repeatedly and used in addition to conventional LTP. Although our LTS was less effective than LTP, the trial may lead to the development of another useful treatment modality.

ISSN:0030-3755    

DOI:10.1159/000310302

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

The possibility of a relation between high myopia and lens opacity was studied. For this research, the Lens Opacity Meter 701 was used. The lens opacity values measured in 91 high-myopic eyes were compared with those measured in a control group of 106 emmetropic eyes. This comparison showed that myopic had always higher lens opacity values than emmetropic ones, and this result was statistically significant after the age of 20.

ISSN:0030-3755    

DOI:10.1159/000310303

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

We present the case of a 39-year-old man with bilateral sclerochoroidal calcification with primary hyperparathyroidism. Both the calcium and parathyroid hormone levels were elevated. Funduscopic examination revealed slightly elevated, multiple yellow lesions in both eyes. Fluorescein angiography showed filling defects of the choroid. Ultrasonography showed elevated, highly reflective lesions, and a computed tomography scan of the globe disclosed sclerochoroidal lesions with high density. We discuss the mechanism of sclerochoroidal calcification.

ISSN:0030-3755    

DOI:10.1159/000310304

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

In this paper a comparative study of efficacy between focal extramacular and focal macular perifoveolar argon laser photocoagulation for the treatment of diabetic macular oedema is presented. The follow-up period was 12 months and was based on fluorescein angiograms. After focal extramacular treatment, diabetic macular oedema was resorbed in 54.6% of the cases, remained unchanged in 28.4% and deteriorated in 17.0%. After focal macular perifoveolar treatment resorption of diabetic macular oedema was achieved in 73.7% of the cases, remained unchanged in 17.1% and deteriorated in 9.2%. Focal macular perifoveolar treatment gives statistically significantly better clinical results than focal extramacular treatment (p < 0.05).

ISSN:0030-3755    

DOI:10.1159/000310305

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

Clinical photocoagulation was performed successfully in 18 eyes with retinal vascular disease. In all cases semiconductor laser was used emitting wave lengths from 780 to 840 nm. Energy for visible coagulation edema was 400 up to 1,200 mW, time between 0.2 and Is. In 3 cases using endolaser, acute retinal traction during light exposition was seen; retinal hemorrhages occurred in no patient. Four patients complained of moderate to marked pain compared to argon laser treatment. In all cases visible marked retinal scars of therapeutical range were observed.

ISSN:0030-3755    

DOI:10.1159/000310306

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

We report the simultaneous development of exudative macular degeneration in monozygotic twin brothers. This report supports the hypothesis that genetic factors may be implicated in the pathogenesis of age-related macular degeneration.

ISSN:0030-3755    

DOI:10.1159/000310307

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

The ultrastructure of the extraocular muscles of patients affected by congenital strabismus is not completely known, and the structures responsible of the pathogenesis of this condition are still to be determined. Specimens obtained from patients suffering from congenital strabismus were studied and compared with specimens obtained from patients enucleated for various pathologies and not affected by any disorder in the oculomotor system. The scleral myotendinous junction, where the occurrence of an altered proprioceptive innervation was already reported, was examined, and findings obtained were compared with those observed in the muscle body (venter), where motor innervation is prominent and usually described as normal. Only a small number of damaged muscle fibers was found everywhere. The damage consisted in alterations of both contractile structures and mitochondria and resulted in severer lesions in the scleral myotendinous junction rather than in the muscle body. The normal muscle fibers were innervated by motor nerve endings with normal features and by few altered proprioceptors. The less damaged muscle fibers were innervated by normal motor nerve endings and severely damaged proprioceptors. The most severely damaged muscle fibers did not receive any type of innervation. These data seem to imply that the most important functional alteration in strabismus regards the scleral myotendinous junction. It is the authors’ opinion that these findings might have a clinical importance in choosing the treatment to be pursued in patients with a squint.

ISSN:0030-3755    

DOI:10.1159/000310308

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

A case of orbital involvement in Waldenström’s macroglobulinemia is presented. Orbital echography, computed tomography (CT) and magnetic resonance imaging (MRI) were performed and revealed a retrobulbar mass of the right orbit. Ultrasonography suggested a lymphoid orbital tumor. A CT scan was nonspecific, but helpful in exactly locating the tumor and excluding bony lesions. Signal intensity patterns of MRI were characterized by a low intensity on T1- and T2-weighted images. A marked enhancement of the tumor was evident after intravenous injection of a paramagnetic contrast agent (gadolinium-DTPA). Although the definite diagnosis could only be established by means of an ultrasound-guided fine-needle aspiration biopsy, MRI in connection with the history of our patient strongly suggested a diagnosis of orbital lymphoma in Waldenström’s disease.

ISSN:0030-3755    

DOI:10.1159/000310309

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

A 3-year-old girl (case 1) had a blue iris and albinotic fundus in the right eye and bilateral deafness. Her 6-month-old sister (case 2) had hypopigmented irides and fundi in both eyes and bilateral deafness. We found that the ratios of interinner canthal distance to interpupillary distance were less than 0.65 in normal Japanese controls. In our patients, these ratios were within the normal range, indicating the absence of dystopia canthorum. After reviewing the recent Japanese literature we found that the hypopigmented iris and deafness seen in our patients are common in Japanese patients with Waardenburg syndrome.

ISSN:0030-3755    

DOI:10.1159/000310310

出版商:S. Karger AG    

年代:1992

数据来源: Karger

ISSN:0030-3755    

DOI:10.1159/000310311

出版商:S. Karger AG    

年代:1992

数据来源: Karger