Canine distemper, its complications, sequelae, and treatment . FiG. 7.—Leucoma of the Left Eye. ally the cornea undergoes pigmentation, pigmentumnigrum being the dark colouring matter which appearsin spots on the internal surface of the corneal membraneafter ulceration. (2) Cataract.—An opacity of the crystalline lens or ofits capsule. Grey cataract may occur as a result ofdisease of other parts of the eye, which has forced thelens into abnormal positions, or rendered its nutrientsupply defective. The discoloration or opacity may be SYMPTOMS 97 in localised spots or diffused, and where difficu
Canine distemper, its complications, sequelae, and treatment . FiG. 7.—Leucoma of the Left Eye. ally the cornea undergoes pigmentation, pigmentumnigrum being the dark colouring matter which appearsin spots on the internal surface of the corneal membraneafter ulceration. (2) Cataract.—An opacity of the crystalline lens or ofits capsule. Grey cataract may occur as a result ofdisease of other parts of the eye, which has forced thelens into abnormal positions, or rendered its nutrientsupply defective. The discoloration or opacity may be SYMPTOMS 97 in localised spots or diffused, and where difficulty isexperienced in making a thorough examination of thelens for diagnostic purposes the best plan is to dilatethe pupil of atropine. Prognosis is unfavour-. FiG. 8.—Grey Cataract of Both Eyes.(Miiller and Glass, Diseases of the Dog.) able: the sight is impeded or entirely lost according tothe 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 opticnerve, or diseases of the brain. It is known also as Black Cataract, presumably from the absence of whiteor other visible lesions. No pain is connected with thecondition, but prognosis is very grave, as only in therarest instances have dogs been known to recover theirsight after the onset of amaurosis. (4) Glaucoma, or dropsy of the anterior chamber; asecondary disease marked by intense intra-ocularpressure, and resulting in hardness of the eye, atrophyof the optic disc, and blindness. The cornea is renderedopaque and the conjunctivae frequently inflamed. 7 98 CANINE DISTEMPER (5) Total Excision.—A grave termination which becomesimperative in some cases of panoph
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Keywords: ., bo, bookcentury1900, bookdecade1920, booksubjectdogs, bookyear1922
