# Summary
Cat owners should treat squinting in one eye as a veterinary emergency. This symptom signals serious eye problems that demand immediate attention from a veterinarian.
Squinting occurs when cats experience pain or discomfort in the affected eye. Common causes include corneal ulcers, infections, foreign objects lodged in the eye, and glaucoma. Each condition worsens rapidly without treatment and risks permanent vision loss or blindness.
Cats instinctively hide pain and illness, making squinting a reliable indicator that something requires urgent care. What appears as minor discomfort today can develop into severe complications within hours or days.
Beyond squinting, pet owners should watch for excessive tearing, eye discharge, redness, or behavioral changes like hiding or reduced appetite. These signs often accompany eye problems and strengthen the case for immediate veterinary evaluation.
Early intervention prevents complications and preserves your cat's vision. A veterinarian can diagnose the underlying cause through examination and appropriate testing, then prescribe targeted treatment. Delaying care increases the risk of scarring, infection spread, or irreversible damage.
Never assume squinting will resolve on its own. Contact your veterinarian the same day you notice this symptom. Prompt action protects your cat's eye health and overall wellbeing.