At what level of lighting do horses diagnosed with CSNB experience a change in vision?
As soon as light levels drop below what you can comfortably read a book by. The change for the horse is dramatic. Below this level, a darkened room that still has enough light for you to see in and avoid all objects easily is totally black to an Appaloosa with CSNB. Likewise, outside on a moonlit night, where you can see trees, rocks and ground texture, an Appaloosa with CSNB sees nothing. The world is completely black, unless it looks straight at the moon or some other light source that is bright enough to appear as a light spot in its field of vision.
Related Questions
- Do all Appaloosas diagnosed with CSNB have the same degree of vision during the day? Is their day vision the same as or different from horses that don’t have CSNB?
- At what level of lighting do horses diagnosed with CSNB experience a change in vision?
- How are horses with CSNB diagnosed? Is there a test for it?
