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Query: UMLS:C0086543 (cataract)
 29,165 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

When radial cortical opacities occurred in the lenses of glaucomatous eyes, ocular hypertension soon became normal. Glaucoma operations were not performed on patients over 50 years of age, and medical control or simple lens extraction was adopted. In 86% of the lenses extracted from glaucomatous eyes no medication was necessary to keep normal ocular tension for two years postoperatively. The water content of extracted lens from glaucomatous eyes was always in the lower half compared to water content of nonglaucomatous cataractous lenses. Thus the absence of radial cortical opacities is a cause of senile glaucoma. Three laws of aging in the human body and eye are advocated and hypothesized. Simple glaucoma is caused by an ischemia of Schlemm's canal through bending of the scleral branch of anterior ciliary artery caused by continuous zonular traction. From the cation material assortment of extracted dried lenses, it was found that human senile cataracts including glaucomatous nuclear cataracts had normal membranes except in the final stage. Glaucomatous diffuse cortical opacities also had normal membrane, contrary to the damaged membrane in the swollen lens in the final stage of cortical senile cataract.
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PMID:Nuclear cataract as a cause of senile glaucoma. 725 55

In a series of 1,000 consecutive intracapsular cataract extractions, the most important peroperative complications were rupture of the capsule in 6.5% of the cases and vitreous loss in 3.0%. The most important immediate postoperative complications were delay in wound closure in 2.7% of the cases, iritis in 2.9%, ocular hypertension in 3.4%, and some other complications. The late complications were an Irvine-Gass syndrome in 2.8% of the cases, an epithelial downgrowth in the anterior chamber in 0.6%, and a retinal detachment in 2%. alpha-Chymotrypsin often causes a temporary ocular hypertension (in at least 25.2% of the cases). The functional results are very good, when there is no pre-existing ocular pathology: in 90% of the cases the vision was 7/10 or more.
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PMID:Complications in 1,000 consecutive intracapsular cataract extractions. 745 24

The authors report a case of bilateral essential iris atrophy syndrome in a twenty two years old man associated with unilateral cataract and glaucoma. They stress the rarity of the syndrome (first case in their section) and the uncommon bilateral case. The cataract unusually described in the syndrome would be directly linked to the important and durable ocular hypertension.
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PMID:[Essential atrophy of the iris apropos of 1 case]. 749 19

We analyzed the data from 1821 patients (2920 eyes) who received photorefractive keratectomy (PRK) to investigate the postoperative complications which cause a significant decrease in visual acuity. A corneal haze of grade 2 or more developed in 9 patients (11 eyes, 0.38%) and corticosteroid-induced ocular hypertension occurred in 3 patients (4 eyes, 0.14%). Three patients (4 eyes) who had corneal haze of grade 2 or more underwent repeated photorefractive keratectomy and one patient (2 eyes) with steroid-induced ocular hypertension underwent trabeculectomies. A decrease of best spectacle corrected visual acuity of two lines or more was detected in 7 patients (8 eyes, 0.27%), caused by irregular astigmatism, steroid-induced cataract, incidental choroidal neovascular membrane, and an unknown origin. Good predictability and stabilization after photorefractive keratectomy was maintained at the 2 year follow-up. However, some subjective symptoms were reported by many patients and some complications occurred in a minority of eyes despite the excellent visual outcome in a large majority.
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PMID:Some problems after photorefractive keratectomy. 751 6

Scanning laser ophthalmoscopy is a laser-based image acquisition technique, which greatly improves the quality of the examination of the fundus and the retinal nerve fiber layer. To assess retinal nerve fiber layer imaging by scanning laser ophthalmoscopy and evaluate intra- and interobserver reproducibility in the classification of retinal nerve fiber layer defects, three independent observers evaluated on two separate occasions the videotaped images of 150 eyes of 80 consecutive patients with ocular hypertension or glaucoma. Ophthalmoscopy was performed using argon blue light (488 nm), confocal apertures of 3 to 1 mm, and 40-degree and 20-degree field angles. Of 150 eyes, 20 (13.3%) were excluded from the study because of the poor quality of the images (clinically significant cataract or myopic peripapillary atrophy). The retinal nerve fiber layer was evaluated qualitatively according to a standard classification: normal pattern, slit, wedge, and diffuse defects. Intraobserver reproducibility, evaluated by kappa statistic, was excellent (> or = 0.75): observer A = 0.78 (95% confidence limits, 0.67-0.88); observer B = 0.84 (95% confidence limits, 0.72-0.96); and observer C = 0.79 (95% confidence limits, 0.67-0.91). Interobserver reproducibility was also excellent in all cases: observers A-B = 0.84 (95% confidence limits, 0.71-0.98); observers A-C = 0.76 (95% confidence limits, 0.65-0.87); and observers B-C = 0.80 (95% confidence limits, 0.69-0.92). Kappa values ranged between 0.59 and 0.69 for intraobserver reproducibility and between 0.55 and 0.69 for interobserver reproducibility when using only those eyes in which abnormalities were noted by at least one observer.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Reproducibility of retinal nerve fiber layer evaluation by dynamics scanning laser ophthalmoscopy. 773 1

A pilot study was carried out to determine the prevalence of ophthalmic disease in the Indian community of Southall and to ascertain the best methods applicable for a larger formal study. Three sites were chosen for the study, a Sikh gurdwara, a mosque and a Hindu temple. The subjects were volunteers aged 30 years and over who had visited the appropriate place of worship at least twice in the previous month. A total of 184 subjects were examined. The prevalence of blindness was 2.7% by the World Health Organization (WHO) criteria, while 9.8% had uniocular blindness. The prevalence of glaucoma and ocular hypertension was 2.7% and 7%, respectively. Of the 184 subjects examined, 58% had cataract and 3.8% had age-related maculopathy. The prevalence of visually disabling trachomatous eye disease was 9.7%. The prevalence of diabetes mellitus was 17.9%, and that of hypertension 22.8%. This small study suggests that people with origins from the Indian subcontinent have a higher prevalence of ophthalmic disease than the Caucasian population.
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PMID:A pilot study into the prevalence of ophthalmic disease in the Indian population of Southall. 819 34

We compared the accuracy and testing time of a new 26-point central visual field glaucoma screening device, the oculokinetic perimetry (OKP) screener, with the results obtained with the Friedmann field analyser standard program (phase 1) and the Humphrey field analyser 40-point screening program (phase 2). Seventy-three eyes of 73 subjects were tested in phase 1, and 142 eyes of 75 subjects in phase 2. The study population comprised patients with eyes that were ocularly normal and patients with eyes showing early cataract, posterior vitreous detachment, established chronic open-angle glaucoma or ocular hypertension. The OKP glaucoma screener demonstrated a sector concordance rate of 95% in phase 1 and 93% in phase 2. The OKP screener was three to four times more rapid in execution than the standard device. We feel that the OKP glaucoma screener is ideally suited for use by physicians in a family practice setting.
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PMID:Comparison of the oculokinetic perimetry glaucoma screener with two types of visual field analyser. 822 66

During 20 months, 593 intracapsular cataract extractions have been studied, the authors founded 10 cases of ocular hypertension representing 1.68%. These eyes did not present any ocular pathology before and the intraocular pressure was normal before the operation. Among the 10 cases, 4 developed pupillary block. In 7 cases, the intraocular pressure was normalized within one month by local and general low pressure treatment, while 3 cases developed persistent ocular hypertension. The authors preconise to have a low pressure by premedication before surgery and to survey every day the intraocular pressure after intracapsular cataract extraction to prevent irreversible modifications of the optic nerve.
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PMID:[Ocular hypertension after intra-capsular cataract extraction]. 865 70

The authors studied the intraocular pressure (IOP) changes after phacoemulsification with two different kinds of foldable silicone lens implantation using Healon GV as viscoelastic substance. One hundred patients undergoing cataract surgery were enrolled in this study. Inclusion criteria were: absence of ocular hypertension or glaucoma. Patients were randomly assigned to plate haptic (Silens PH, Domilens Chiron Vision, Lyon, France) or three-piece (CeeOntrade mark& ;920, Pharmacia spa, Milano, Italia) silicone intraocular lens (IOL) implantation. Following phacoemulsification and cortical aspiration, the capsular bag was reinflated with Healon GV. After foldable silicone IOL insertion residual Healon GV was removed from the anterior chamber. IOP was measured preoperatively and at 6, 24 h and 1 week postoperatively. Six hours postoperatively IOP was higher in the Silens PH group than in the CeeOn group (20. 85+/-5.42 vs. 18.88+/-2.95 mm Hg, p= 0.026). The difference was confirmed after 24 h (21.02+/-5.18 vs. 17.34+/-3.18 mm Hg, p < 0.01). Despite the medical treatment (acetazolamide 250 mg orally every 6 h), at the 24-hour control 2 eyes with plate haptic silicone lens showed IOP values higher than 30 mm Hg. Slitlamp examination showed in both eyes a shallowing of the anterior chamber together with the evidence of capsular bag hyperdistension and capsular block resulting from the occlusion of the circular anterior capsule opening by the plate haptic IOL. Residual Healon GV removal from the anterior chamber was performed. At 1-week control both eyes showed normalization of IOP. The use of a plate haptic silicone lens may be associated with a more consistent retention of Healon GV in the eye with trapping in the capsular bag. Retained viscoelastic may cause either trabecular meshwork blockage by viscoelastic substance or postoperative capsular bag hyperdistension, anteroplacement of the IOL optic and capsular block from occlusion of the circular anterior opening by the IOL optic.
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PMID:Intraocular pressure changes after phacoemulsification and foldable silicone lens implantation using Healon GV. 969 88

We report a case in which diffuse interface keratitis began 1 week after bilateral uneventful laser in situ keratomileusis (LASIK). A layer of fluid in the interface with epithelial ingrowth was noted in the left eye 20 days postoperatively. The same complication occurred in the right eye 5 months after LASIK. Dry-eye syndrome and steroid-induced intraocular pressure elevation occurred in this patient with pre-existing ocular hypertension. A long course of interface inflammation was resistant to topical steroids. Surgical removal of the epithelial ingrowth and drainage of the fluid, combined with medical treatment, resulted in resolution of the inflammation. The cytopathologic examination of the fluid showed epithelial cells without signs of inflammation. The clinical features of this case represent a new complication of LASIK.
J Cataract Refract Surg 1999 Jul
PMID:Interface fluid associated with diffuse lamellar keratitis and epithelial ingrowth after laser in situ keratomileusis. 2249 35


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