Repeated references found in ophthalmology textbooks and compiled CERF data to allude to problems in these breeds, but no breed-specific studies have been undertaken. The vitreous is a crystal clear jelly that is the single largest structure within the eye. The health of the vitreous is important for normal ocular function. The vitreous helps give shape to the eye, provides nutrients and removes waste products, as well as giving support for the retina. Maintenance of normal sight requires the vitreous to be clear and remain in its normal semisolid state and position.
Syneresis also occurs secondary to previous intraocular inflammation.
It has also been seen as a congenital and heritable condition associated with retinal dysplasia in certain breeds, such as the Labrador retriever. To date no careful study of vitreous degeneration has been done in the dog. In 1996 Dr. Schoster received a 3 year grant from the American Kennel Club to do a prospective study about vitreous degeneration in the Whippet. Dr. Schoster intends to follow the animals enrolled in the study for at least a full ten years. The first step in solving any problem is to define the problem.