Ultrasonographic evaluation of the eye parameters in dogs of different age

Abstract

The aim of this study was to measure and evaluate the structures of the eye (corneal thickness, lens thickness, vitreous thickness, and sagital eyeball axis) in dogs of different age. We investigated 10 to 15-day-old, 20-day-old, 2 to 4 month-old and adult mixed-breed dogs in this study. Eye structures were measured using A-mode ultrasound equipment and fluid probe ultrasonic pachymetry. We found that parameters of the eye such as the lens thickness, vitreous thickness and sagital eyeball axis increased with age. The parameters of the left and right eye differed insignificantly. The central cornea was the thickest in the 20-day-old dogs (0.8872±0.1181 mm in the left eye and 0.9924±0.1044 mm in the right eye); it was the thinnest in adult dogs (0.4956±0.1167 mm in the left eye and 0.568±0.0843 mm in the right eye). In adult dogs the cornea thickness depended on the site of measurement. The central point of the cornea was the thinnest, and the peripheral part was thicker in both eyes. The peripheral temporal point was the thickest.