DISEASES OF THE EYE. 349 



animal. Warts not uncommonly appear on or about the eyelids of 

 cattle. 



Treatment. — The removal of a tumor in the vicinity of so delicate 

 an organ as the eye should not be attempted by anyone not qualified 

 to perform the operation. 



LACERATION OF THE EYELID. 



This accident is not uncommon where cattle are fenced in by 

 barbed wire ; an animal may be caught under the eyelid by the horn 

 of another, or the laceration may otcur in the stable by means of a 

 projecting nail or splinter of wood. 



Treatment. — The edges of the wound should be brought together 

 closely and correctly, by means of pins pushed through very nearly 

 the whole thickness of the lid, extending through each lip of the 

 torn part ; then a waxed silk or linen thread must be wound over 

 each end of the pin, crossing the torn line in the form of the figure 

 8 (PI. XXVII, fig. 9) ; the pins should be placed about three-eighths 

 of an inch apart. The projecting ends of the pins should be cut 

 off close to the ligature, and the parts kept anointed with vaseline, 

 to w^hich 2 per cent of compound cresol has been added. In place 

 of a pin suture, silver wire, catgut, or strong linen thread may be 

 used in the way of an ordinary suture. 



FOREIGN BODIES IN THE EYE. 



Splinters of wood, hedge thorns, pieces of cornstalk or leaves, stems 

 of hay or straw, twigs of trees, or weeds may penetrate into the eye, 

 break off, and remain, causing inflammation, blindness, abscess, etc. 

 These substances may penetrate the eyeball, but more frequently 

 they glide off and enter between the eye and the ocular sheath. 



Treatment. — Their removal becomes often a very difficult task, 

 from the fact that the organ is so extremely sensitive, and the re- 

 tracting power so strong as to necessitate casting the animal, or even 

 the administration of sufficient chloroform to render it completely 

 insensible. The removal, however, is of paramount importance, 

 and the after treatment depends upon the extent and location of the 

 injury — cold water compress over the injured eye, the application of 

 mild astringent and cooling washes, such as acetate or sulphate of 

 zinc, 5 grains to the ounce of Avater. When there is extreme suffer- 

 ing from pain a solution of atropia or morphia, 5 grains to the 

 ounce of water, may be dropped into the eye, alternating with the 

 cooling wash several times a day. When abscesses form within 

 the orbit a free opening must be maintained for the discharge of pus. 

 In deep penetrating wounds of the eye there is a great tendency 

 to the formation of a fungous growth, which often necessitates the 

 enucleation of the whole eyeball. 



