no CANINE AND FELINE SURGERY 



tome is passed into the anterior chamber at the margin of 

 the cornea in the direction of the lens, which it scratches 

 several times in such a \\z.y as to lacerate its capsule. This 

 procedure ma}- have to be repeated iwo or three times at 

 intervals of a month or six weeks, the lens itself ultimately 

 undergoing a process of absorption. 



The second operation consists in the removal of the entire 



Fig. 78. — Graefe's Cataract Knife. 



lens. A special pattern of knife (usualU' Sichel's or Graefe's) 

 is used in order to puncture the cornea, an entrance being 

 effected on its conjunctival margin, and the point pushed 

 through some distance further along, the intervening portion 

 of cornea, together with a thin slice of the conjunctiva, being 

 incised. The aqueous humour is allowed to escape, and the 

 capsule of the lens is scratched ^\•ith a cystitome as described 

 above ; gentle pressure with the finger and thumb is put 



Fig-. 79. — Graefe's Cystitome and Curette. 



upon the eyeball, and by the aid of a cataract spoon or 

 curette the lens is slowh' and carefulh- forced out through the 

 corneal orifice. More antiseptic lotion is then applied, the 

 eyelids being kept closed and covered with an antiseptic 

 pad. 



After - treatment consists in keeping the patient in a 

 darkened kennel, and as quiet as possible, for about a fort- 

 night or so, the antiseptic pad being changed once or twice 

 a day. 



