Third Eyelid Cartilage Eversion in Dogs

Category: Eye
Breeds documented: 1
Published sources: 2

Overview

A third eyelid helps protect the eye and spread tears across its surface. When its supporting cartilage bends abnormally, the eyelid's edge can roll outward and become visible. This is called third eyelid cartilage eversion, and it can affect one or both eyes. Some dogs develop ongoing irritation and eye discharge.

Signs to watch for

A rolled or folded edge of the third eyelid
Redness from irritation around the eye
Persistent eye discharge

Usually noticed in young dogs as the eyelid develops.

When to get help Arrange a vet visit if the third eyelid looks folded or has persistent discharge.

Diagnosis and tests

A vet examines the third eyelid to identify the bend in its supporting cartilage. A slipped tear gland in the third eyelid can look similar, so the vet checks which structure is affected. Careful examination distinguishes these problems, although a dog can have both at the same time.

Breeds with documented risk

1 breed

By breed size

1 Medium

Basset Artésien NormandMedium · FCI Group 6 (Scenthounds)

Inheritance

Not yet known
None of the sources we use states how this is inherited in dogs yet.

We've gathered what published sources say about this condition, so you can talk it through with your vet. It isn't veterinary advice: you and your vet know your dog best.