Io EXAMINATION OF HORSES 
on quickly uncovering and observing the affected eye, 
the impaired movement of the iris may be seen. Often 
it happens that the iris has been adherent to the lens, 
and the adhesions have given way and liberated the 
iris. When this is so, we may generally see bits of iris 
adherent to the lens, and the pupil ragged in. that 
locality, and showing evidence of being torn. The 
tension of the two eyes is also altered after a severe 
ophthalmia. To try the tension, rest the three last 
fingers of both hands upon the eyebrow, and then 
press your index fingers alternately upon the globe of 
the eye—covered by the upper lid, of course—and 
compare the resistance of the two eyes. The first 
healthy pair of eyes you come across do this, and 
once feel the tension effectually, and you are not likely 
to ever forget it. This knowledge of the feel of normal 
tension is quite necessary, because it may happen that 
you come across both eyes of the same horse with 
abnormal hardness or softness ; but this is seldom the 
case. What commonly happens—probably in nineteen 
cases out of twenty—is that one eye only is showing 
signs of a previous ophthalmia, and you have the other 
eye to compare it with. But, as I have before said, 
when once you feel the tension of a sound eye; you 
never forget the peculiar elastic feeling of resistance 
which it gives. 
