DISEASES OF THE CONJUNCTIVA 71 



be protected with a pad after it has been thoroughly 

 cleansed with an antiseptic solution. 



Conjunctivitis during attacks of cow- and sheep-pox 

 is due to the same pathologic conditions that exist in the 

 skin. This t}^e is most virulent. The Hds are extremely 

 swollen and the secretion is usually profuse. The char- 

 acteristic lesions on the conjunctiva tend to coalesce, 

 forming a large area of ulceration. If it is not early 

 controlled it may terminate in ulceration of the cornea, 

 perforation, and loss of the eye. 



The treatment is the same as for purulent conjuncti- 

 vitis, together with that for ulceration of the cornea. 



Phlyctenular Conjunctivitis.— This is vesicular erup- 

 tion of the conjunctiva, and often accompanies eczema 

 and other skin affections. The vesicles vary in size 

 from a pin-point to a pin-head or larger. They may 

 be single or multiple. A favorite site is near the corneal 

 margin. They often invade the cornea, when it is known 

 as a phylctenular keratitis. The vesicles contain 

 a semifluid of yellowish appearance, said to be due to 

 the presence of staphylococci, but late investigators 

 show that tubercular infection may be the cause. The 

 apex of the vesicles break down, when they may ter- 

 minate in resolution or ulceration. 



One afflicted with phlyctenular disease of the cornea 

 or conjunctiva shows typic symptoms in many cases. 

 There is much photophobia, and strong contraction of 

 the muscle closing the eye, and the head is carried in 



