CONGENITAL-ABNORMALITIES IN SHAPE AND LOC ATION OF THE LENS IN THE DOG - 1ST COMMUNICATION - LENTIGLOBUS LENTICONUS/LENTIPLANUS/

Among those dogs presented with congenital alterations of the lens at the Clinic for Surgery and Ophthalmology of the Veterinary University Vienna in the last twelve years (1985 - 1997), ten cases of posterior lentiglobus/lenticonus have been observed. Bulging of the posterior le ns surface was typically outlined by a transverse oval or circular rin g of opacity and occurred in 8 dogs unilateral. In two of these cases a posterior lentiplanus existed in the other eye and in one of them th e posterior lentiglobus developed under phacolytic and glaucomatous co nditions to a posterior lentiplanus. All cases had associated cataract s, four cases a persisting hyperplastic vascular tunic of the lens (PH TVL) and / or a persisting hyperplastic primary vitreous (PHPV), one c ase a complicated microphthalmos with corneal dysplasia, one case an e ctopic / subluxated lens, as well as one case with multifocal retinal dysplasia. Seven patients have been presented due to lens associated t roubles.