Refractive state of the Spanish Thoroughbred horse: a comparison with the Crossbred horse.

Objective: To assess the refractive state of the equine eye utilizing retinoscopy. To compare the refractive state of Spanish Thoroughbred horses with the refractive state of Crossbred horses.

Procedures: The refractive state of 135 horses (264 eyes) was assessed utilizing streak retinoscopy.

Bilateral typical complete colobomas in a donkey: retinographic and fluorangiographic description.

An 18-year-old male donkey was referred with a history of blindness. On ocular examination a complete bilateral typical colobomatous defect involving iris, ciliary body, lens, choroid, retina and optic nerve was observed. An optic pit was presented at the temporal side of the right optic head.

Fluorangiographic study of the ocular fundus in normal horses.

Purpose: To describe the protocol and appearance of fluorescein angiography (FA) in normal horses.

Animals: A total of 25 healthy horses aged between 5 and 15 years.

Materials And Methods: The horses were sedated with 15 microg/kg detomidine and 50 microg/kg butorphanol and dilated with topical tropicamide 1%.

The ocular effects of intravitreal triamcinolone acetonide in dogs.

The aim of the study was to determine the ocular safety of a single intravitreal dose of triamcinolone acetonide (IVTA) in dogs. Eleven healthy dogs received a single IVTA injection (8 mg) through the mid-temporal pars-plana of the left eye (OS) using a 27G needle. The dogs were re-evaluated immediately post-IVTA, every 5 min until pre-IVTA values had returned, then daily for 3 days, weekly for 1 month and monthly for 3 months.

Comparative fluorescein angiography of the normal sheep and goat ocular fundi.

Fluorescein angiography without sedative or anesthetic agents was evaluated in 20 normal goats and 20 normal sheep. All of the angiographic phases were observed using 20 mg/kg fluorescein IV in both species. Fundus fluorescein angiography results revealed wide stars of Winslow in the tapetal fundus, central or marginal flow during the first part of the arterial phase, delayed filling of the focal areas in the choroid near the optic disc that often coincided with others in the disc, and lack of evidence of the 'striate area' in the tapetal fundi.

A Clinical, Pathological and I mmunopathological Study of Vitiligo in a Siamese Cat.

Abstract- The clinical, histopathological and ultrastructural features of a spayed female Siamese cat with a three-and-a-half year history of progressive cutaneous depigmentation are described. Clinically the condition was characterised by progressive leukoderma of the nose, pinna and footpad skin, and multifocal leukotrichia involving the whole body. Histopathological and ultrastructural studies confirmed the absence of melanocytes and melanin in the epidermis and hair follicles of affected areas.