Eye discharge and squinting: what to do
A practical guide to protecting a painful or irritated eye.
Topic illustration selected for this guide. Some learning images may be AI-assisted.Eye discharge and squinting: what to do — the quick answer
✓ Squinting usually means discomfort
✓ Do not use old or human eye drops
✓ Cloudiness or trauma needs prompt assessment
✓ Prevent rubbing during transport
Cats can deteriorate quickly with some eye problems. Squinting, holding an eye closed or a cloudy surface indicates discomfort and should not be treated with leftover drops.
Compare both eyes
Check redness, swelling, discharge, pupil size, cloudiness and whether the third eyelid is visible. Photograph both eyes in the same light without using a flash close to the face.
Clean only what is safe
Wipe discharge from the surrounding fur with sterile saline or cooled boiled water on a soft pad. Do not touch the eye surface or force the lids apart.
Avoid dangerous leftovers
Some drops, especially those containing steroids, can worsen certain corneal injuries. Use medication only for this cat and this episode when prescribed.
Choose the timeline
Seek prompt same-day advice for squinting, a closed eye, cloudiness, unequal pupils, injury or marked redness. Sudden blindness, severe trauma or a protruding eye is an emergency.
Your quick checklist
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Three simple things you can do
You do not have to change everything today. Pick one step that feels realistic, try it and see how your cat responds.
- 1Compare both eyes in good light and note redness, cloudiness, pupil size and discharge.
- 2Prevent rubbing if possible and contact a veterinarian promptly for squinting or pain.
- 3Use only eye medication prescribed for that cat and current problem.
Common mistakes
×Using old drops or human redness medicine.
×Waiting several days while the cat holds an eye closed.
×Trying to remove an embedded object from the eye.
Questions cat people ask
Is clear eye discharge normal in cats?+
A small occasional tear may occur, but persistent discharge, squinting, redness, cloudiness or pain needs veterinary assessment.
Why is my cat squinting one eye?+
Pain from a scratch, ulcer, foreign material, inflammation or other eye disease is possible. Eye problems can worsen quickly, so seek prompt care.
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Checked, dated and transparent
- Prepared by
- EverYes Cats editorial team
- Last updated
- 7 August 2026
- Source checked
- 7 August 2026
- Primary reference
- Cornell Feline Health Center ↗
We begin with the named reference, rewrite the information in plain language and add practical cat-parent steps. Urgent health statements are checked against veterinary sources. This guide has not been individually reviewed by a veterinarian unless explicitly stated. It provides education, not diagnosis or treatment.
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A clear increase in thirst is worth measuring and discussing with a veterinarian. Never restrict water while you investigate the cause.