· Dark pigment on the surface of the eyes

· Discharge from the eyes

· Prominent blood vessels on the surface of the eyes

· Eyes red and inflamed

· Your dog blinks excessively, rubs its eyes, or holds them closed

Here's a brief introduction to dry eye disease, a condition that affects up to 300,000 Irish people.

Dr. Lera takes us through the ins and outs of the disease as well as how it's diagnosed and the limited treatments currently available.

Dry Eye Disease onset at a younger age.

Did you know that there's one colour the retina cannot detect? If the eye was a camera, how many megapixels would it be? Check out the answers to these questions here.