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What are Corpora Nigra?
Corpora nigra (also known as granula iridica) are pigmented, irregular, and roughed extensions of the posterior iris epithelium. They are present in a small group across the dorsal (upper) pupillary margin extending into the anterior chamber and...

So, you want to be a veterinary ophthalmologist? Of course you do, it’s the best job on the planet earth! Who wouldn’t want to be a veterinary ophthalmologist? After all, you get to help a variety of animals, their associated owners, practice at the highest level of ve...

What is equine recurrent uveitis?
Equine recurrent uveitis (ERU), also known as moon blindness or periodic ophthalmia, is the leading cause of blindness in horses worldwide. Equine recurrent uveitis is inflammation inside the eye that recurs at regular

intervals over th...

What is Exophthalmos?

Exophthalmos is the term used for a forward deviation of the eye out of the boney orbit. The most common causes of exophthalmos will affect one rather than both eyes, although there are a few conditions which can affect both eyes. There are many st...

Case: Josie, a 10-year-old female small breed dog, first presented to The Animal Eye institute 6 years ago for evaluation of a cataract in her right eye, and an overall smaller than normal size to her right eye (microphthalmia). Josie was started on an anti-inflammator...

What is a corneal sequestrum?


A corneal sequestrum is an unusual disease unique to our feline patients. It appears as a tan to dark brown-

black area of corneal discoloration. It can vary in size, shape, and depth, and it is usually accompanied by corneal inflammation a...

While ophthalmologists are known to take care of your dog or cat’s eye health, they would all agree that the eyelids are also extremely important! Eyelids and the conjunctiva lining the eyelids play a major role in corneal and globe health. As the eyelids are covered i...

What is the lens?

The lens is the structure in the eye that focuses light onto the retina, which senses and converts light into electrical signals sent to the brain to create an image. The lens is comprised of three main structures: the lens capsule (membrane that encas...

What is Feline Herpes Virus?

Feline Herpes Virus (FHV) is a major cause for conjunctival and corneal disease in cats and is one of the most frustrating diseases to manage for the cat, owner, and veterinarian. Infection with FHV is common and affects greater than 90% of...

What is entropion?

Entropion, or inward rolling of the eyelids, is a common abnormality of the eyelids in many species, especially dogs. It can affect one to all four of the eyelids, but in most cases, both eyes are affected. The inward rolling of the eyelids causes t...

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