KERATITIS 123 



foreign bodies, which should be removed at once 

 if detected. If the eye be very sensitive, a few drops 

 of a four-per-cent solution of cocain instilled into 

 the conjunctival sac greatly facilitates the required 

 manipulation. The eye should then be washed with 

 a saturated solution of boric acid, a 1-3000 chinosol 

 solution, or a two-grain to the ounce solution of 

 protargol. If there is much pericorneal injection 

 and haziness of the cornea, the pupil should be di- 

 lated with homatropin. Excessive pain and irrita- 

 tion are nicely controlled by a few drops of a col- 

 lyrium containing one grain of cocain and ten grains 

 of boric acid to the ounce of water. When the 

 acute stage is passed the eye should be frequently 

 cleansed with the saturated solution of boric acid, 

 and a few drops of a solution of protargol, five 

 grains to the ounce of distilled water, instilled three 

 or four times a day. Cloudiness of the cornea should 

 be treated, after the subsidence of all acute symp- 

 toms, with the yellow oxid of mercury ointment, 

 one to three per cent. 



Keratitis 



Inflammation of the cornea may be the result of 

 infection spreading from an infected conjunctiva or 

 introduced by injuries, and it is a frequent symptom 

 of distemper. Keratitis is classified as heratitis 

 superficialis, keratitis interstitialis, and suppurative Tcera- 

 tiiis. 



Keratitis Superficialis 



Keratitis superficialis should in reality be regarded 

 as a disease of the conjunctiva, since it is the bulbar 

 portion of that membrane which is affected, and, 

 strictly speaking, not the cornea proper. "Conse- 

 quently it has been described above under conjunc- 

 tivitis. 



