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Biomedical subjects

J M Corboy

Publications and source records attributed to J M Corboy.

5 recordsLinked to original sources

Choyce lens warp testing: effect of temperature and pressure changes.

Choyce-style lenses made from sheer PMMA (ICI Perspex CQ) have a different thermal response than lenses made of Rohm & Haas injection molded PMMA: Perspex lenses are more resistant to high temperature deformation. However, under simulated physiologic temperatures and pressures, there is no apparent lens deformation, nor is there a difference in response between lens types. In general, the susceptibility of all thermoplastics to heat, and the ease with which high temperatures may be achieved in transportation, require improved packaging; great care must be taken to protect and inspect intraocular lenses before implantation. Demonstrated variation in thermal response from lens to lens, and even from foot to foot, further mandates such care and also cautions against the acceptance of claims based on inadequate or incomplete data. All lenses should be checked, with the best clinical test for flatness being that in which each foot is depressed to check for rocking or lift.

Humans

Corticosteroid therapy for the reduction of postoperative inflammation after cataract extraction.

In an random, double-masked multicentric clinical trial, topical betamethasone phosphate 0.1% or placebo eyedrops were used five times daily for the first two weeks after uncomplicated intracapsular cataract extraction in 107 patients who had moderate to severe postoperative inflammation on the first postoperative day. Topical corticosteroid solution was significantly more effective than placebo in the reduction of postoperative ocular inflammation. There were no ocular complications of corticosteroid treatment.

Adrenal Cortex Hormones