VETERIIfAEY OPHTHALMOLOGY. 51 



diagnosing between conjunctivitis and inflammations 

 of a deeper nature. 



Conjunctivitis Catarrhalis. — Purulent (which may 

 be idiopathic or gonorrlie'al, Biplxtheretic^ Granular^ 

 Phlyctenular, tliese are some of tlie forms of inflam- 

 mation of the conjunctiva, one of which may run into> 

 another. The discharge from one kind may reproduce 

 itself or one of anotlier form. Tliey are contagious 

 and infectious. May occur epidemically. Pink-eye is 

 but an epidemic catarrhal conjunctivitis. A differential 

 diagnosis is often impossible early. 



Catarrhal Conjunctivitis. — Catarrhal ophthalmia is 

 the mildest form. Caused by injuries, exposure, bad 

 hygiene, exanthematous diseases, etc. Again, it may be 

 secondary to other inflammations. Among the symp- 

 toms we find smarting preceded by itching, lachryma- 

 tion, sensation of sand or of some other foreign body 

 in the eye. Have increased vascularity, causing partial 

 or uniform redness of the ocular conjunctiva and impart- 

 ing to the palpebral conjunctiva a velvety, roughened ap- 

 pearance. CEdematous swelling of the conjunctiva and 

 subjacent tissue, which may go on to chemosis, causing^ 

 the cornea to look sunken. Redness, swelling and stiff- 

 ness of the lids. Mucus or muco-purulent discharge, 

 with tendency toward agglutination of the lids, espe-' 

 cially succeeding sleep. Both eyes usually participate, 

 although one eye may go free. This form js amenable 

 to treatment and not very apt to invade the cornea. 



