Abstract
A nine-year, six-month old Shetland sheep dog was brought in suffering from rapidly failing vision. Examination of the eyes revealed numerous round, small bodies suspended in the vitreous body. The condition was diagnosed as asteroid hyalosis.
A few days later, bleeding into the vitreous body was observed in the right eye. In the left eye, there were severe retinal detachment and hemorrhage.
Histopathologically, arterioles of the bilateral fundi were found to have undergone a high degree of hyalinization, and arteriolar lumen had become narrow or blocked. In the kidney, extensive hyalinization of arterioles and glomerular sclerosis were seen. The hepatic interlobular arteries and splenic central arteries had also undergone hyalinization.
The above vascular changes consisting mainly of intimal hyalinization of arterioles in the systemic organs including the retina and choroidmembrane were diagnosed as arteriolosclerosis.
It was suspected that these ocular manifestations resulted from hemorrhage or exudation caused by retinal and choroidal arteriolosclerosis.
