VETERINARY OPHTHALMOLOGY. 63 



or one form of different degree — i. e., a- thin (tenue)^ 

 and a thick (crassum). Requires no treatment unless 

 it extends upon tlie cornea so as to obstruct vision. 

 May then be remo\red by (1) excision, which is dis- 

 secting the growth off of the cornea and sclerotic, to a 

 point near the canthus, and uniting the conjunctival 

 wound by sutures ; (2) transplantation, which is per- 

 formed by dissecting it off up to the base and then insert- 

 ing it into an incision made in the conjunctiva, parallel to 

 the lower edge of the cornea and retaining it there by 

 sutures ; or (3) ligature ■ thread passed around the 

 growth at two or more points, so as to cause stran- 

 gulation. 



As the result of severe chronic conjunctivitis we 

 meet with Xerophthalmia. Dryness of the eye. This 

 is an atrophied condition, and of cicatrical change 

 in the cornea, conjunctiva and sub-con junctival tissues. 

 The surface is of a dirty greenish or grayish color, or 

 tendinous appearance. Also is dry, scaly, and stitf 

 irom destruction of secretory apparatus. Obliteration 

 of the palpebral folds, and more or less adhesion of 

 lid to globe. 



i Tkeatment is inefftcient. The dryness may be alle- 

 viated by bland applications, such as milk, glycerine, 

 vaseline, etc. 



Tumors of the CDnjunotiva. — Pinguecula; a small 

 yellowish tumor, fatty in appearance, situated near 

 the corneal margin, and chiefly seen in the aged ; con- 



