Radial keratotomy has been used for the treatment of myopia since 1979. Until recently, patients with undercorrected myopia had recourse only to repeated keratotomy. Now patients undercorrected after two or more radial keratotomy procedures can be treated with the excimer laser to reduce the residual myopia. Nineteen eyes of 17 patients with undercorrected myopia after repeated radial had excimer photoradial keratectomy performed. The mean residual spherical equivalent refractive error after radial keratotomy was -2.74 +/- 1.06 diopters (D). This was further reduced after PRK. Final uncorrected visual acuity ranged from 20/20 to 20/70. Excimer laser PRK offers a safe and more controlled method of treating residual after radial keratotomy.

Adolescent↗

PubMedDate not supplied

The history of lens implantation in Canada.

The first successful intraocular lens implantation in a patient after cataract removal was performed in 1949 by Dr Harold Ridley. Although several ophthalmologists attempted lens implantation with the Ridley implant in the years that followed, the success rate was so poor and the results so inconsistent that the procedure was abandoned until the Binkhorst system was introduced by Dr Kwitko (1966). Lens implantation gained a certain measure of acceptance by 1975; however, major problems still existed, for example, a lack of satisfactory magnification and frequently occurring flat chambers. These problems were solved largely by the introduction of the co-axial microscope and viscoelastic material.

Canada↗

PubMedDate not supplied

An entropion clamp.

Explore the source record for details and available documents.

Entropion↗

PubMedDate not supplied

The alpha-chymotrypsin injector.

Explore the source record for details and available documents.

Cataract Extraction↗