Ulceration of the Cornea

Prevention of stromal ulceration in the alkali-burned rabbit cornea by glued-on contact lens. Evidence for the role of polymorphonuclear leukocytes in collagen degradation.

Stromal ulceration of the alkali-burned rabbit cornea was found to be associated invariably with phagocytically active polymorphonuclear leukocytes (PMNs). A glued-on methylmethacrylate lens applied to corneas soon after burning, however, prevented re-epithelialization and also prevented PMN infiltration of the stroma and stromal ulceration. Subsequent partial detachment or complete removal of ...

Epidemiology and aetiological diagnosis of corneal ulceration in Madurai, south India.

AIMS/BACKGROUND To determine the epidemiological characteristics and risk factors predisposing to corneal ulceration in Madurai, south India, and to identify the specific pathogenic organisms responsible for infection. METHODS All patients with suspected infectious central corneal ulceration presenting to the ocular microbiology and cornea service at Aravind Eye Hospital, Madurai, from 1 Janu...

Marginal ulceration of the cornea.

Effect of dexamethasone in combination with acetylcysteine at different times on corneal wound healing in dogs

The purpose of this study was to evaluate the effects of different time combinations of dexamethasoneand acetylcysteine on experimentally induced corneal ulcers in dogs. Experimental corneal wounds werecreated surgically to the anterior one third of the cornea in the center of all eyes of 15 mixed breed dogs. The eyes were divided into five groups according to planned post-operative medications...

Ulceration of the cornea in rheumatoid arthritis.

Five patients with melting of the cornea in association with rheumatoid arthritis are described. The arthritis was often inactive and without systemic manifestations, in contrast to that seen in association with scleritis. In 3 there was evidence of reduced tear formation, but in none was tear production absent. In 3 patients the lesions healed during treatment with azathioprine or penicillamine.

Prevention by medroxyprogesterone of perforation in the alkali-burned rabbit cornea: inhibition of collagenolytic activity.

The incidence of perforation and deep ulceration of the alkali-burned rabbit cornea was substantially reduced by topical or parenteral administration of medroxyprogesterone. The mode of action of the hormone is probably at least in part related to its suppressive effects on production of tissue collagenase, as indicated by the considerable reduction in collagenolytic activity by living explants...