224 Diseases of the Eyes and Ears. 
disease may originate in the anterior chamber, but as a 
rule both eventually suffer. 
Treatment consists of draining off the fluid by means 
of the trocar and cannula, at various intervals, followed 
by the application of cold water, or astringent and 
evaporating lotions. 
Distension of the Eyeball from extravasation of 
blood and serous effusion as the result of direct injury, 
was successfully treated by Blaine, evacuation being 
secured by means of a couching needle. He proposed 
to consider such states as ¢raumatic dropsy. 
Dislocation of the Byeball is common to small 
animals having large and prominent organs, being caused 
by injuries from other dogs in combat, or by the claws 
of a cat. 
Trealment is by operation, which must be performed 
by the practised canine surgeon. 
Tumour and Enlargement of the Haw, or Car- 
tilago Nictitans—The formation of tumour may find 
attachment to the substance of the cartilage, interfering 
_ greatly with vision, and producing a copious flow of tears 
known as wazery eye. They are caused by various forms 
of irritation, and are also congenital. Removal by knife 
or scissors is the only effectual plan. 
Enlargement is caused by cold, injuries, irritation, 
&c., or it may be congenital, inducing pain, becoming 
acutely inflamed, and producing abundant lachrymation. 
Treatment consists of scarifications to the membrane, 
followed by hot fomentations, or the spongio-piline 
poultice, aided by a laxative internally. Subsequently, 
astringent lotions to the affected parts. Complete ampu- 
tation may be called for. 
Dermatoid Conjunctiva.—This is usually a con- 
genital defect. A portion of the conjunctival membrane 
covering the eyeball is thickened, and organised similar 
to the skin, bearing a tuft of strong hairs. Early atten- 
tion is called to the defect by a profuse lachrymation and 
inconvenience, amounting to opacity of the eyeball with 
absolute loss of vision. The tuft, together with the 
