Categories: diabetes

Diabetic Cat and Eyes

by Elle

My 20 yr old cat is having eye problems. He is diabetic and I administer insulin once a day. He is also on diabetic diet.

He has had eye infections since the onslaught of the diagnosis of diabetes. Today I noticed his left eye had his tear duct covering half of his eye??! What is this?


Hi Elleā€¦ what you are seeing is the nictitating membrane or third eyelid.

The third eyelid is not normally seen. It may become visible in response to illness.

It protrudes from the inside corner of the eye, where the tear duct is. That is probably why you mistook it
for the tear duct.

When only one eye has a protruding third eyelid it is probably caused by an illness that is related to that eye only.

Whereas if the third eyelid is seen in both eyes suspect a general illness such as feline viral respiratory infection.

There are many possible eye diseases. In this case it is due to an eye infection in the left eye it seems.

It may be caused by a corneal abrasion. The cornea may be abraded by eyelashes that are in the wrong position. The third eyelid comes out to protect the scratched cornea.

Recommended: see the vet to have it checked out.

Please comment here using either Facebook or WordPress (when available).
Michael Broad

Hi, I'm a 71-year-old retired solicitor (attorney in the US). Before qualifying I worked in many jobs including professional photography. I have a girlfriend, Michelle. I love nature, cats and all animals. I am concerned about their welfare.

Recent Posts

5000 cats, dogs and other animals die in shipping boxes

There will be no pictures (there are pictures but I won't publish them) and before…

58 mins ago

Amazing video: cat copies her owner’s complex movements

Although we know that cats can be trained to do things, in this video you…

2 hours ago

Pet savings account to pay for self-insurance

A designated pet savings account at your bank is a good way to manage self-insurance…

3 hours ago

How to better protect your companion animal on your death

In the immediate aftermath of your perhaps untimely and unforeseen death, you would like your…

7 hours ago

Are packing peanuts safe for cats?

It is difficult to provide a straightforward answer to the question in the title. However,…

11 hours ago

Do cats’ paws fall asleep?

In other words, do cats get pins-and-needles in their feet? We don't know the answer…

12 hours ago