Daily Care2026-03-10Carelogy編集部
Cat Eye Discharge Care: How to Clean & When to Worry
How to clean cat eye discharge safely, distinguish normal from abnormal, and recognize signs of eye disease.
Cat Eye Discharge: Normal vs. Abnormal
Normal discharge: A small amount of dry, dark brown or black crust in the inner corner of the eye is perfectly normal. Flat-faced breeds such as Persians produce more tears and are especially prone to mild discharge.
Abnormal discharge (see your vet):
- Yellow or green pus-like discharge: Possible bacterial or chlamydial infection
- Excessive watery tearing: May be an early sign of feline herpesvirus (cat flu)
- Discharge from one eye only: Could indicate a foreign body or corneal scratch
- Eye that won't open: Suggests severe infection or pain
For more details, see our guide on eye problems in cats.
How to Clean Eye Discharge Properly
What you need: Gauze or a cotton pad dampened with lukewarm water. Do not use tissues — loose fibers can enter and irritate the eye.
Step-by-step:
1. Dampen a gauze pad with lukewarm water.
2. Hold your cat gently and wipe from the inner corner of the eye outward in one direction only.
3. Use a separate pad for each eye to prevent spreading any infection.
4. If discharge has dried and hardened, do not peel it off — moisten it first and let it soften before wiping.
How often: Healthy cats only need cleaning as needed. Cats prone to heavy discharge may require daily care.
Preventing Eye Problems
Vaccination: The viruses that cause cat flu — herpesvirus and calicivirus — can be prevented through vaccination. They are included in the standard FVRCP (core) vaccine.
Indoor environment: Minimize dust and airborne irritants. Cigarette smoke is harmful to feline eyes as well as lungs.
Regular checkups: Include an eye exam as part of your cat's annual wellness visit. Senior cats in particular should be screened for cataracts and glaucoma.
Tear stain management: Brachycephalic (flat-faced) breeds such as Persians, Exotics, and Himalayans are prone to tear staining and need daily eye-area grooming to keep the skin healthy and free of irritation.
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