Effect of orally administered melatonin on intraocular pressure of ophthalmologically normal dogs.

Objective: To determine the effect of orally administered melatonin on the intraocular pressure (IOP) of ophthalmologically normal dogs.

Animals: 20 ophthalmologically normal dogs (40 eyes).

Procedures: In a randomized crossover study, each dog received a 7-day regimen of melatonin (0.

Ocular disease in American crocodiles (Crocodylus acutus) in Costa Rica.

Beginning in early 2006, an ocular disease of unknown etiology was routinely observed in American crocodiles (Crocodylus acutus) inhabiting the highly polluted Tarcoles River in west-central Costa Rica. We examined the nature and incidence of ocular disease in Tarcoles crocodiles and assessed the possible association between the disease and accumulation of chemical pollutants in diseased individuals. During 12-15 September and 12-13 December 2007, crocodiles were captured and examined for ocular disease and sampled to determine environmental contaminant accumulation.

Microbial contamination of the anterior chamber during cataract phacoemulsification and intraocular lens implantation in dogs.

The objective of this study was to determine the frequency of intraoperative contamination of the anterior chamber with viable microorganisms during cataract phacoemulsification and intraocular lens implantation, and to evaluate the relationship of contaminant microorganisms to patients' extraocular and nasal cavity floras. Also, the impact of various aspects of the patient history and phacoemulsification procedure on the incidence of positive postoperative anterior chamber cultures was investigated. Twenty-two eyes from 13 dogs presented for elective cataract phacoemulsification and intraocular lens implantation were studied.

Ophthalmic disease in exotic species.

This article highlights factors that must be kept in mind when dealing with species other than cats, dogs, and horses. Diseases of the eye are similar regardless of whether they occur in humans or domestic or exotic species. There are unique conditions in exotic species that reflect differences in anatomy, physiology, pharmacology, and pathophysiology compared with domestic species.