THE HORSE, ITS DISEASES. 4S1 



vm. Funilent Ophthalmy. 



Purulent Ophthalmy is confined to the conjunctiva (mucus membrane 

 of the eye), and it is in this membrane that the redness and ordinary 

 swelling of the eyes have their seat. The eyelids are much swollen, and 

 the membrane rises up, puffy and red above the level of the cornea (the 

 transparent disc), sometimes in fungoid excrescences. This species of 

 inflammation is epidemic, and when occurring often, goes through the • 

 stable. 



What to do. — Place the animal in a moderately dark stable, keep the 

 eyes wet constantly — by means of the cloth shown in the cut with inflam- 

 mation of the hooks — with the following : 



No. 171. 2 Drachms sulphate of zinc, 



20 Grains morphia, 

 1 Pint rainwater. 



Use the water tepid if possible, but if used cold at first, it must be so 

 continued, and vice versa. 



The bowels should be kept moderately open with physic if necessary, 

 or with soft feed, and the same general treatment used as for the other* 

 forms of ophthalmy. 



If the disease does not yield to this treatment, and becomes chronic> 

 prepare a wash as follows : 



No. 172. 6 Grains nitrate of silver, 



1 Ounce distilled water, or rainwater filtered through sharp' 

 washed sand. 



Mix, and drop a little into the eye, daily, from a quill. 



IX. Fungoid Tumors in the Substance of the Eye. 



This is a rare affection, and fortunately so. The causes which prt>* 

 duce it are obscure, but probably the same as in any other cancerous 

 affection. The end will probably be death, for the taint of the cancerous 

 affection is probably in the system. Upon close examination, the eye 

 ball may be clear, but a brilliant yellow substance may be seen at the 

 base of the interior. 



If it be not deemed best to destroy the animal, the eye must be extir- 

 pated. Two knives are required, of a peculiar shape, one of small size 

 and slightly bent to one side ; the other larger and curved to one side 

 until it nearly reaches the shape of a semi-circle. A sharp scalpel (the 

 knife ordinarily used in surgical operations) will also be required. Two 

 straight, triangular pointed needles threaded with strong waxed twine, a. 



