Diseases of the Eye. 2^1 



becomes immovable and has a bright glassy 

 appearance. This is caused by a paralysis of the 

 optic nerve, or the surface of the retina, or what 

 is often called the mirror of the eye, occasioned 

 by a determination of blood to the brain, and its 

 consequent pressure on the optic nerve, thus de- 

 stroying its functions. Cures in this disease are 

 very rare ; indeed I doubt if any well-authen- 

 ticated cases really exist. Of the three cases 

 which have come under my observation during 

 the past fifteen years, neither of them were cured, 

 although bleeding, medicine, the rowel and seton 

 were tried, and from the nature of the disease 

 I have but little faith in all I have read of a 

 cure having been effected in a single confirmed 

 case of gutta serena or glass eye. 



GENEEAL BLINDNESS AND IMPERFECT 



VISION. 



iNo subject is of greater importance than the 

 state of the organs of vision of the horse, which 

 ought to occupy the first attention of a purchaser. 

 Blindness or a partial defect of the eyes often 

 leads to many unpleasant consequences to the 

 proprietor, whether he is riding or driving. It 

 requires considerable knowledge of the anatomi- 

 cal construction of the eye to enable any one to 

 judge correctly of its perfection or defects ; and 

 I am sorry to say that not half of the members 

 of the veterinary profession pay due attention to 

 the eye, and do not make it so much of a study 

 as should be devoted to it. We have many 



