96 CANINE DISTEMPER 
weeks of treatment before dispersal is effected, and may 
even be permanent. 
The seguele which may arise from lesions of the eye 
in distemper are: : 
(1) Leucoma.—Cicatricial opacities of the cornea, 
following ulcerative keratitis, may vary in size and 
density, and remain sometimes permanently. Occasion- 
Fic, 7—LEUCOMA OF THE Lerr EYE. 
ally the cornea undergoes pigmentation, “ pigmentum 
nigrum” being the dark colouring matter which appears 
in spots on the internal surface of the corneal membrane 
after ulceration. 
(2) Cataract.—An opacity of the crystalline lens or of 
its capsule. Grey cataract may occur as a result of 
disease of other parts of the eye, which has forced the 
lens into abnormal positions, or rendered its nutrient 
supply defective. The discoloration or opacity may be 
