Updated
Cat health check
One-eye squinting is an eye-pain sign until a veterinarian rules out injury, ulcer, infection, or irritation.
Do not use human eye drops. Protect the eye and call your vet.
A cat who is squinting one eye may still eat, jump, and act normal. That does not make the eye safe to watch for days. Squinting, blinking, pawing, redness, cloudiness, discharge, or light sensitivity can mean pain.
Look for the timing, which eye is affected, whether the third eyelid is showing, and whether your cat is rubbing the face. Those details help your vet decide how quickly the eye needs to be seen.
Do not force the eye open, rinse it with random products, or use leftover human or pet eye medication unless your veterinarian tells you to. Some drops can make the wrong eye problem worse.
Keep the room calm, prevent rubbing as best you can, and take a clear photo or short video if your cat allows it without stress.
Tell your vet when the squinting started, whether there is redness, cloudiness, discharge, pawing, injury risk, appetite change, hiding, or a visible third eyelid.
Eye problems are easier to treat when they are checked early. If the eye looks worse, your cat keeps it closed, or pain seems obvious, treat it as urgent.
Seek prompt veterinary help for a closed eye, cloudiness, injury risk, colored discharge, blood, severe rubbing, swelling, appetite loss, hiding, or any sudden decline.
Breathing trouble, collapse, pale or blue gums, toxin exposure, or severe pain is an emergency, even if the first thing you noticed was the eye.
Treat one-eye squinting as an eye-pain sign until your veterinarian rules out injury, ulcer, infection, or irritation. Do not use human eye drops.
Call promptly for a closed eye, cloudiness, injury risk, colored discharge, severe rubbing, swelling, appetite loss, hiding, or an eye that worsens.
