This case series examines the magnitude and regional variation in scleral lens–induced corneal edema postradial keratotomy (RK) eyes. Scheimpflug imaging was used to measure thickness across central 6 mm before after lens wear nine post-RK eyes (median age 64 years). Variations were examined as a function of distance from center (six 0.5-mm annuli) 0° 360°. The median 2.19% (interquartile range...

During November 1985 a survey was carried out to determine the prevalence and causes of blindness in the Elim Hospital district of Gazankulu in the Northern Transvaal, South Africa, and to assess the Eye Department's effectiveness in preventing blindness. Using a random cluster sample technique, we screened 18,962 of the estimated 71,200 inhabitants of the district (26.6%). We found 109 blind p...

PURPOSE To report a young child with bilateral keratoconus in the context of vernal keratoconjunctivitis (VKC) who developed bilateral corneal hydrops associated with eye rubbing, and to discuss the pathogenesis and review the pertinent literature. CASE REPORT A seven-year-old girl with VKC and asymmetric keratoconus developed corneal hydrops due to habitual eye rubbing. Corneal edema subside...

PURPOSE Studies have shown that stromal acidosis reduces the rate of corneal thickness recovery after induced edema, providing the first human in vivo evidence that corneal pH can influence corneal hydration control. This finding raises the question of the possible effect that pH may have on induced corneal swelling. To explore this question, the corneal swelling response to hypoxia was measure...

Spectacle correction for eyes with refractive errors is still the most widely used method, but very high-powered spectacle lenses, besides their unpleasing appearance, have the inherent drawbacks of spherical and chromatic aberrations, prismatic effects, and limitation of the visual fields. Contact lenses present their own problems in the form of intolerance, allergy, irritation, and conjunctiv...

Purpose: To report four cases of toxic anterior segment syndrome after cataract surgery under intracameral 0.5% lidocaine anesthesia.Case summary: Four patients had a decrease in visual acuity within 3 days undergoing surgery. There was evidence chamber inflammation with corneal edema and opacity. Toxic diagnosed on the basis negative microbial cultures clinical features. Three were treated sys...

PURPOSE To compare the performance of sonic phacoemulsification with that of ultrasonic phacoemulsification in regard to 1-day postoperative visual acuity, corneal edema, and procedure efficiency. SETTING Oregon Eye Institute, Eugene, Oregon, USA. METHODS This prospective nonrandomized study comprised 86 eyes with mild to moderate nuclear sclerotic cataract. Forty-three eyes had sonic and 4...

Bullous Keratopathy is the presence of corneal epithelial bullae, resulting from corneal endothelial disease. Bullous Keratopathy is caused by oedema of the cornea, resulting from failure of the corneal endothelium to maintain the normally dehydrated state of the cornea. Most frequently, it is due to Fuchs corneal endothelial dystrophy or corneal endothelial trauma. Fuchs dystrophy is a genetic...