114 



CANINE AND FELINE SURGERY 



da^-s immediateh- following its first insertion the artificial eye 

 should onl}- be allowed to remain for about an hour or so, 

 the time being gradually extended. In all cases it is 

 necessary to remove it each evening for cleansing purposes, 

 as if left in altogether it causes a watery, catarrhal, or even 

 purulent, discharge. The improvement in the appearance 

 of the animal when the false eye is inserted is \er3' great. 



Fig. 83. — Japanese Spaniel before a 

 Glass Eye was inserted. 



Fig. 84. — The same with Glass 

 E)"e in situ. 



Protrusion or Paralysis of the Membrana Nictitans.^ 



This may be the result of an accident, such as a scratch 

 from a cat, a tear with a nail, or some such injury ; or it ma)- 

 occur as a sequel to an illness. 



Symptoms. — It is not uncommon, especially after some 

 debilitating diseases, for one or both of the membranse to 

 become paralvzed and to protrude over the e\-eball, sometimes 

 to such an extent as to cause considerable irritation to the 

 patient and to interfere with vision. As the animal becomes 

 convalescent this may right itself, and it is always well to 

 try the effect of a course of quinine and iron or other tonics 



