摘要:

We prospectively examined corneal conditions and bacterial growth in 77 individials with unilateral aphakia who were using extended-wear soft contact lenses. The ratios of positive bacterial growth (70.6–79.4%) from 34 patients with superficial punctate keratopathy were significantly higher than those (41.9–46.5%) from the 43 subjects with normal corneas. Bacterial growth was found frequently in patients with superficial punctate keratopathy who were older than 80 years and in those using soft contact lenses for more than 22 days. Several kinds of bacteria grew from the specimens. Among the most common were Staphylococcus epidermidis and Cornybacterium species. Pseudomonas aeruginosa grew from patients with superficial punctate keratopathy who were using extended-wear soft contact lenses.

ISSN:0030-3755    

DOI:10.1159/000310289

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

Congenital cataract occurs in 90–95% of diabetic rat fetuses. The pathogenetic mechanism is triggered by fetal hyperglycemia and presents the following steps: (1) a high glucose concentration in the lens; (2) reduction of glucose to sorbitol by aldose reductase; (3) accumulation of sorbitol into the fibers of the lens creating a hyperosmotic effect, leading to (4) an infusion of liquid into the fibers, which (5) become hydropic and degenerate (vacuolization). This series of manifestations might also occur in fetuses of pregnant diabetic mothers. Post birth glycemia diminishes rapidly, and this favorable condition which decreases vacuolization is perhaps the reason why such degeneration has not yet been observed. Since the fibers of the lens are permanent cells, damage in the fetal period might later bring about negative consequences. We hope that someone will study whether this ocular pathology occurs in human infants born to diabetic mothers.

ISSN:0030-3755    

DOI:10.1159/000310290

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

We examined retrospectively a total of 171 patients (236 eyes) who had undergone extracapsular cataract extraction (ECCE) with or without intraocular lens implantation (IOL). The best and practically corrected visual acuities were determined 6 months after surgery. Practically corrected visual acuity of the ECCE group was significantly worse than that of ECCE plus IOL group of patients who had undergone unilateral cataract surgery. In patients who had undergone bilateral surgery, visual improvement was almost optimal in both groups. With regard to practically corrected visual acuity, ECCE plus IOL was the preferable procedure for elderly patients who had had unilateral cataract.

ISSN:0030-3755    

DOI:10.1159/000310291

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

To determine the outcome of preoperative against-the rule (AR) astigmatism among 1,648 phacoemulsification and aspiration (PEA) procedures, we analyzed the postcataract time course of astigmatism over 6 months in 618 eyes divided into three groups. In preoperative AR astigmatism < 0.75 dptr (n=208) the astigmatism increase 1 week postoperatively was rapid. In preoperative AR astigmatism ≥1.5 dptr (n=185), no difference in the power of astigmatism was apparent between 1 and 3 months postoperatively. The third group (0.75 ≤ preoperative AR astigmatism < 1.5 dptr, n=143) showed intermediate characteristics. The eyes with preoperative low AR astigmatism showed exacerbation of astigmatism after the PEA procedure, whereas the degree of astigmatism, corneal curvatures and the rate of AR astigmatism became lower in the eyes with higher preoperative AR astigmatism.

ISSN:0030-3755    

DOI:10.1159/000310292

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

Pseudoexfoliation (PE) material has been studied pathologically. However, there are no reports about intraocular muscle function in pseudoexfoliation syndrome (PXS). We studied intraocular muscle function in 12 patients (70.3 ± 10.1 years of age) with ipsilateral PE material by measuring the time course of pupillary diameter change and accommodogram. Initial intraocular pressure (16.3 ± 4.2 mmHg) was significantly higher in eyes with PXS than in normal fellow eyes (13.1+3.5 mm Hg). The pupillary diameter of an affected eye was smaller than that of a fellow eye after bilateral topical application of tropicamide. Continuous near-point testing revealed no significant difference; accommodative contractile time, relaxation time, and/or accommodopattern showed different patterns from the fellow eye. The results suggest that intraocular muscle function is disturbed in PXS.

ISSN:0030-3755    

DOI:10.1159/000310293

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

We investigated the risk of mortality and morbidity in 78 patients with central retinal vein occlusion (CRVO) followed for more than 2 years (mean follow-up 7.2 years). Thirteen subjects died at an average of 7.0 years after CRVO. Five subjects developed myocardial infarction at an average of 2.8 years after CRVO, and 1 developed a cerebrovascular accident 3 years after CRVO. Patients with CRVO do not carry a higher risk of mortality and morbidity than matched controls derived from national surveys.

ISSN:0030-3755    

DOI:10.1159/000310294

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

Three members of a family with dominantly inherited juvenile optic atrophy tested with a computerized perimeter employing violet and blue-green test lights and low-intensity white background, all showed larger reduction in the relative sensitivity to violet light in the more central parts of the visual field compared with the periphery within 30° from the center. Two subjects had typical optic atrophy, centrocecal scotoma and lower than normal visual acuity. In 1 subject with good visual acuity of both eyes, no optic atrophy was observed but there was impairment in the luminosity function (tested with white test object on white background) of the peripheral visual field.

ISSN:0030-3755    

DOI:10.1159/000310295

出版商:S. Karger AG    

年代:1992

数据来源: Karger

摘要:

We report an autopsy case of 4-day-old male infant with arthrogryposis multiplex congenita studied by histological methods in respect to the ocular tissues. The eye examined was normal in size, and the retina, optic nerve, choroid, sclera and extracocular muscle showed no remarkable histological changes. However, the cornea was thickened, and the iris, trabecular tissue and ciliary body showed maldevelopmental changes, which were all compatible with goniodysgenesis. The clinical data of this case did not demonstrate any signs of congenital glaucoma, but the present study indicates that an infant with arthrogryposis multiplex congenita has a potential for infantile glaucoma with goniodysgenesis.

ISSN:0030-3755    

DOI:10.1159/000310296

出版商:S. Karger AG    

年代:1992

数据来源: Karger

ISSN:0030-3755    

DOI:10.1159/000310297

出版商:S. Karger AG    

年代:1992

数据来源: Karger

ISSN:0030-3755    

DOI:10.1159/000310298

出版商:S. Karger AG    

年代:1992

数据来源: Karger