What is the clinical term for recurrent immune-mediated uveitis in horses?

• A. Moon blindness
• B. Equine recurrent uveitis (ERU)
• C. Bacterial endophthalmitis
• D. Glaucoma

Answer: (B)

The clinical term for recurrent immune-mediated uveitis in horses is Equine recurrent uveitis (ERU). This is the formal name used in veterinary ophthalmology to describe the relapsing inflammation of the uveal tract that can affect one or both eyes over time. Moon blindness is a traditional nickname for the condition, but ERU is the standard clinical term you’ll see in exams and practice. The other options refer to different conditions—bacterial endophthalmitis is an infection inside the eye, and glaucoma is a separate problem involving elevated eye pressure. ERU captures the recurring inflammatory nature of the disease and is the terminology you should use in clinical discussions and when recording diagnoses.