43 



Id examiniDg tbe eye for a cataract one may readily see a 

 gray, a bluish gray, a greenish yellow, a brown or a pearl 

 white reflection in the pupillary opening; the form (star- 

 shaped, cloudy, fog-like, feathery, streaked, or scattered dots, 

 ball-shaped, etc.,) can be determined if the opacity be sufli- 

 ciently developed. The exact location and form or the small, 

 beginning white speck may not be visible to the observers 

 unaided eye, especially out in the clear sunshine or when 

 the srround is covered with snow. The animal should be 

 placed so that the light falls upon the affected eye from a 

 clear window or an open door in front of the animal. The 

 observer then looks into the pupillary opening, standing in 

 in front or to one side; it is well to observe the eye from 

 various points of view. If the pupil is contracted or too 

 small to admit of sufficient examination, a few drops of a 

 solution of atropine (1 gr. atropine to 1 ounce of water) 

 may be put into the eye to expand the pupil. The lens may, 

 also, be examined by placing the animal in a dark room and 

 illuminating the eye with a candle, or a candle and a double 

 convex lens, or with a candle and a small concave mirror 

 (see methods of examining the eye). 



Fig. 13. 

 Luxuration (dislocation) of the opaque lens into aqueous chamber; 

 the lens lies in front of the iris, almost completely obstructing the 

 passage of the light through the pupil. 



Treatment of cataracts in domestic animals consists chiefly 

 in prevention. The reducing of all inflammations of the 

 eye, the prevention of periodic opthalmia, keeping tbe sur- 



