What is ERU in Quarter Horses?


Your vet can tell you that ERU stands for Equine Recurrent Uveitis (ERU) and can occur in horses like the Quarter horse. It is an inflammation in the uvea of the eye and is sometimes referred to as “Moon Blindness.” The uvea is made up of the iris, ciliary body and choroid, which forms the middle layer of the eye between the retina and sclera. Symptoms include spasms and contractions of the pupil. ERU is a painful condition that keeps the horse’s eye from functioning; meaning the horse may be unable to focus or even see properly. ERU is incurable; however, treatments are available to help control the symptoms. In some cases, antibiotic drops are prescribed to dilate the eye twice a day in order to decrease the painful spasm. A steroid may then be prescribed to reduce inflammation. Pain medicine may also be recommended by your veterinarian Park County, CO in order to keep your horse comfortable.

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