SYMPTOMS 97 
in localised spots or diffused, and where difficulty is 
experienced in making a thorough examination of the 
lens for diagnostic purposes the best plan is to dilate 
the pupil by.means of atropine. Prognosis is unfavour- 
Fic. 8.—GreEyY Cataract oF Botu Eyes. 
(Miiller and Glass, ‘‘ Diseases of the Dog.’’) 
able: the sight is impeded or entirely lost according to 
the extent of the lesion. 
(3) Amaurosis, or complete blindness, occurs some- 
times in the absence of any apparent lesions of the eye, 
but probably is a sequel to retinitis, atrophy of the optic 
nerve, or diseases of the brain. It is known also as 
“Black Cataract,” presumably from the absence of white 
or other visible lesions. No pain is connected with the 
condition, but prognosis is very grave, as only in the 
rarest instances have dogs been known to recover their 
sight after the onset of amaurosis. 
(4) Glaucoma, or dropsy of the. anterior chamber ; a 
secondary disease marked by intense intra-ocular 
pressure, and resulting in hardness of the eye, atrophy 
of the optic disc, and blindness. The cornea is rendered 
opaque and the conjunctive frequently inflamed. 
