Dr. Bob was out on Monday morning to evaluate Satin's eyes for any sign of progressing loss of sight. His forst comment was, "She has mild uveitis, which is the precursor for blindness, but her eyes look healthy and sighted."
Whew. The uveitis is likely to cause of her "night blindness", or congenital stationary night blindness (CSNB), which she's has since she was a foal. However, there is another condition often called "moon blindness", different from CSNB, which is also caused by uveitis (the technical name for moon blindness is Equine Recurrent Uveitis). Satin's night blindness could be caused by either of these conditions.
The good news is aside from the mild uveitis her eyes appeared otherwise healthy. Uveitis can eventually lead to retinal detachment due to the pressure of the swelling vessels behind the retina, causing loss of vision. This is not uncommon in the Appaloosa breed and something I have been watching for for years.
She does appear to have less vision in the left eye than the right - exactly the eye I was concerned about.
The vet simply wants me to watch for signs of discomfort (progressing uveitis) such as rubbing, tearing, etc.
All in all, Satin can see! So no excuses, silly girl.
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