Page 998 - The Veterinary Care of the Horse
P. 998
months or years. In many cases the inflammation never really subsides, just quietly persists.
These horses may benefit from long-term or permanent medication provided there is no
VetBooks.ir reason why this is inadvisable for a particular animal.
With each attack, further degenerative changes occur within the eye. The changes include
the following.
• There is a gradual reduction in intra-ocular pressure and the eyeball becomes smaller
(Figure 21.13(b)).
• Retinal degeneration and cataract formation cause a progressive loss of sight.
• In some cases, the iris does not dilate fully despite the administration of atropine. The
pupil margin becomes irregular in outline as parts of the iris remain attached to the lens.
Pigmented deposits can be seen on the anterior lens capsule. (Figure 21.17.)
