378 Veterina7-y Medicine. 



zinc salts, are liable to precipitate in the abraded tissue and cause 

 a lasting opacit}'. If the pain is severe it may be moderated by 

 the addition of atropia sulphate, or a solution of i to 100 water 

 may be instilled into the eye several times daily. Cocaine makes 

 an excellent substitute. In deeper wounds, perforating the cor- 

 nea and allowing the escape of aqueous humor, there may be 

 prolapse of the iris through the wound. It may be pressed back 

 with a fiat sterilized spatula, and retained by bandage and a course 

 of eserine. Should it still escape, it must be seized with forceps, 

 drawn out and snipped off with a sharp pair of sterilized scissors. 

 The greatest care must be taken to avoid infection which may 

 cause panophthalmitis and destruction of the entire eyeball. 



FOREIGN BODIES IN THE CORNEA. 



In case of penetration of the cornea by thorns, thistles, glass, 

 metal, etc., there usually follows inflammation with a red area 

 around the offending object. If the foreign body is a piece of 

 iron there is a brownish area caused by iron oxide. Focal or 

 transillumination will usually reveal the object. Should both 

 fail, a solution of fluorescin when applied will develop a greenish 

 area around it. 



Treatment may be made as advised by Gould by pressing a 

 little antiseptic cotton to the front of the eye, so as to entangle 

 and withdraw the foreign body when the eyeball is rolled. Fail- 

 ing in this we may cocainize the eye and remove the offending 

 object with a small curette or spud. A careful focal illumination 

 of the eye will enable the operator to see and remove the smallest 

 particles without injury. Subsequent treatment is that of wounds. 



ACUTE KERATITIS. INFLAMMATION OF THE 

 CORNEA. 



Extension from conjunctivitis, wounds, foreign bodies, bites, stings, 

 blows, infections, filaria. Symptoms : eye tender, closed, epiphora, red. 

 pannus, photophobia, congested sclera, opaque or ramified red cornea, or 

 diffuse red, exudation, suppuration, corneal abscess, ulcer, perforation, pro- 

 lapsus iris, panophthalmia. Focal illumination. Recovery. Permanent 



