UDC 619: 617.7-007.681
DOI: 10.36871/vet.zoo.bio.202304001
Authors
Sergey A. Boyarinov,
Sergey V. Saroyan,
Elena N. Borkhunova,
Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin”, Moscow, Russia
Abstract
This paper presents a correlation between the clinical and histomorphological picture, as well as
electrophysiological data characteristic of different stages of glaucoma optic neuropathy in dogs.
Glaucoma is a common disease among small pets, in particular dogs, leading to impaired visual
functions and blindness, which significantly reduces the quality of life of the animal. Blindness develops
due to increased intraocular pressure, which leads to damage to various layers of the retina,
the optic nerve disc and microcirculation disorders. Therefore, the main task in the treatment of
dogs with glaucoma is the preservation of visual functions. In this work, a study was conducted to
assess the clinical picture in 60 dogs with various stages of glaucoma, as well as in 18 dogs, a histomorphological
study was also conducted with various stages of the glaucoma process.
As a result of the conducted studies, clinical manifestations of fundus changes in the glaucomatous
process in dogs have been identified and substantiated. It is shown that the clinical manifestation
of glaucomatous lesion is polymorphic and depends on the severity of the course and duration
of the disease. The established correlation between the data of ophthalmoscopy, fundoscopy, electroretinography
and histomorphology allows classifying the disease into three stages: initial (from
1 to 5–7 days), advanced (from 7 to 30–45 days) and terminal (more than 30–45 days). Objective
diagnostic symptoms of glaucomatous lesions of the posterior segment of the eyeball are: paleness of
the ZEN and expansion of the excavation of the ZEN, a decrease in the neuroretinal girdle, thinning
of retinal vessels, hyperreflexia of the tapetal zone.
Keywords
intraocular pressure, glaucoma, retina, optic disc, dog
