TL;DR: Inward-growing eyelashes are painful conditions that can lead to permanent eye damage, requiring a veterinary examination within 24 to 48 hours to prevent complications.
What are distichiasis and inward-growing eyelashes in dogs?
When a dog has eyelashes growing toward the eye, it is typically one of two conditions: distichiasis or ectopic cilia. Distichiasis involves extra hairs growing from the eyelid glands, while ectopic cilia are hairs that poke through the inner lining of the eyelid. Both conditions cause the hair to rub against the cornea, the clear front part of the eye, leading to significant discomfort and irritation.
Is my dog's inward-growing eyelash considered an emergency?
- The urgency level for inward-growing eyelashes is Medium; it is a painful condition that requires prompt veterinary attention.
- Constant friction can cause corneal ulcers, infections, or permanent scarring that may impair your dog's vision if left untreated.
- You should aim to have your dog seen by a veterinarian within 24 to 48 hours.
- Seek care sooner if the eye appears cloudy or if your dog is unable to open it.
How does taking a photo of my dog's eye help with veterinary triage?
- High-quality images allow a professional to see the exact placement of the stray hairs.
- Photos help the team check for signs of secondary damage, such as corneal cloudiness or significant discharge.
- This information helps the clinic determine how quickly your pet needs to be fit into the schedule.
- It ensures the veterinary team is prepared with the right diagnostic tools when you arrive.
Clinical Context (Merck Veterinary Manual)
Anomalies of the cilia, such as distichiasis (extra eyelashes), are common and likely inherited in some dog breeds. Inversion of eyelashes or facial hairs causes conjunctival and corneal irritation, potentially leading to corneal scarring, pigmentation, and ulceration if protracted. Treatment is indicated if corneal or conjunctival disease results, requiring destruction of the follicular base of the eyelids without injuring the eyelid margin, often achieved through cryotherapy. Inadequate cryotherapy can result in recurrence.
Chapter: Ophthalmology, Dermatology
Source: The Merck Veterinary Manual, 11th Edition (Page 490)