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"Moon blindness" on an Icelandic horse Advanced stage of disease Advanced stage of disease ERU on an Icelandic horse. Equine recurrent uveitis (ERU) – also known as moon blindness, recurrent iridocyclitis, or periodic ophthalmia [1] – is an acute, nongranulomatous inflammation of the uveal tract of the eye, occurring commonly in horses of all breeds, worldwide.
Photokeratitis or ultraviolet keratitis is a painful eye condition caused by exposure of insufficiently protected eyes to the ultraviolet (UV) rays from either natural (e.g. intense direct or reflected sunlight) or artificial (e.g. the electric arc during welding) sources.
The eye of a horse. The equine eye is one of the largest of any land mammal. [1] Its visual abilities are directly related to the animal's behavior; for example, it is active during both day and night, and it is a prey animal. Both the strengths and weaknesses of the horse's visual abilities should be taken into consideration when training the ...
Myopia, with or without astigmatism, is the most common eye condition in horses. [1] Several types of occlusion myopia have been recorded in tree shrews, macaques, cats and rats, deciphered from several animal-inducing myopia models.
As the condition worsens, so does the horse's lameness, and the interior structures of the joints become more and more irritated. [52] Osselets force 16% of racehorses to retire. [47] Carpitis is inflammation (arthritis) of the carpal joint (knee). Carpitis is caused by overextension of the carpus. [55]
Prolapse of the third eyelid — this means that the third eyelid flickers across the eye or covers more of the eye than normal; Generalized weakness; Weakness in the hind end — the horse may look as though it is 'dog-sitting' Complete collapse; Abnormal whinny — because the muscles of the voicebox are affected as well as other muscles
Whether a horse visually appears to have the frame pattern or not, testing horses of frame or "overo" lineage is highly recommended. The statistical likelihood of producing a living, frame-patterned foal by crossing two frames is 50%, the same odds of producing a living, frame-patterned foal from a frame-to-nonframe breeding which carries no ...
It allows the horse to maintain condition while reducing trauma to joints, making it especially useful for animals recovering from joint-related lameness. However, weight-bearing rehabilitation is also important before the animal goes back to normal exercise, since swimming does not maintain joint tone. [ 3 ]