Disease Description: A condition where the iris (the colored part of the eye) shrinks and becomes non-functional.

Inherit Mode: -

Disease Symptom: Anisocoria (uneven pupil size) ;Dull appearance in the color of the eye; Change in shape of the pupil; Mild sensitivity to bright light ;Holes in the iris (appear as small black specks);Fixed and dilated pupil Iris thinning Translucency of the iris

Disease Cause: Primary iris atrophy is a normal response to aging in dogs. This condition is known as senile iris atrophy, and it typically develops in middle-aged and older pets. While it can occur in all breed of dogs, it is most common in smaller breeds such as miniature and toy poodles, chihuahuas and miniature schnauzers. Secondary iris atrophy can be caused by chronic inflammation, such as uveitis, or glaucoma. Ocular trauma caused by blunt or sharp force to the eye can cause a type of injury that leads to secondary iris atrophy.

Disease Diagnose: Before assessing your pet, your veterinarian will want a full medical history of the dog, especially any details surrounding previous eye infections, issues with sensitivity to light, or a prior diagnosis of glaucoma. Once a thorough history has been documented, your dog will have a physical examination and a battery of tests that may include any or all of the following: Ophthalmology exam - standard eye exam; Tonometry - eye pressure test to check for glaucoma; Corneal tests, neurological examination and skull x-rays (if the dog has been injured)

Treat Method: Primary iris atrophy caused by aging needs no treatment. A shrinking and weakening (atrophy) of the iris is a nonreversible condition. Though it may cause your dog’s eyes to take on a new appearance, eyesight will not be diminished in any way. Secondary iris atrophy that has been caused by disease, such as chronic glaucoma or chronic uveitis, is treated by controlling the underlying disease. Effective treatment for glaucoma or uveitis should bring an immediate halt to iris atrophy. Secondary iris atrophy caused by trauma may require surgical intervention, antibiotics, anti-inflammatories, and analgesics.

Breeder Advice: -

Disease Description Source: Link