Entropion – an abnormality of the eyelids in which the eyelid “rolls” inward. This inward rolling often causes the hair on the surface of the eyelid to rub against the cornea (outer part of the eyeball) resulting in pain, corneal ulcers or corneal erosions. This corneal damage can also result in corneal scarring, that can interfere with vision.
Ingrowing Eyelashes – There are several different disorders associated with abnormal eyelash growth in dogs, though most can be similarly treated:
- Ectopic Cilia, where extra eyelashes grow out of the inner lining of the eyelid (usually upper eyelid in dogs), which then scrape against the surface of the eye creating extreme irritation. Most common in puppies
- Distichiasis, where extra eyelashes grow out of gland openings on inner eyelid rim, often scraping against the surface of the eye, causing extreme irritation;
- Trichiasis, where eyelashes that grow from follicles grow in an abnormal direction sometimes making contact with the eye.
Certain dog breeds are predisposed to eyelash disorders. Some, but not all, are:
- Cocker Spaniel
- Golden Retriever
- Lhasa Apso
- Shetland Sheepdog
- Shih Tzu
- Toy and Miniature Poodle
Can include: squinting, excessive blinking, watery eyes, pawing at eyes, abnormal twitch of the eye, corneal ulcers.