Eye problems caught early are far easier to treat. Use the color and amount of discharge to gauge urgency — then act before things get worse.
Normal eye secretion. A small amount of crust in the corner each morning is perfectly fine. Wipe gently with a damp cotton pad.
Likely bacterial infection. Could indicate conjunctivitis or a corneal ulcer. See a vet soon.
May be a blocked tear duct, foreign body, or corneal injury. One-sided symptoms deserve particular attention.
Conjunctivitis or uveitis. The pain may cause your cat to paw at the eye. Left untreated, it worsens.
A sign of significant pain — possibly a corneal ulcer or internal eye problem. This is urgent; go to the vet immediately.
A classic pattern of cat upper respiratory infection (herpesvirus or calicivirus). Often called 'cat flu.'
Conjunctivitis is the most common feline eye condition. It can be caused by viral infection (feline herpesvirus), bacterial infection, allergies, or a foreign object — leading to discharge, watering, and redness.
Once a cat is infected with feline herpesvirus, the virus remains in the body for life. It can reactivate during periods of stress or when the immune system is weakened. Vaccination reduces the severity of outbreaks.
Eye problems are among the most visible signs of illness, yet ignoring them can lead to corneal ulcers and even blindness. Keep a photo record of any changes and act promptly.
CatsMe makes it easy to photograph your cat's eyes regularly and compare changes over time. Track whether discharge is increasing or changing color, and share your photo log with your vet for faster, more accurate diagnosis.
Get Started FreeEven mild discharge can worsen into a bacterial infection that damages the cornea, potentially causing vision loss. If yellow or green discharge persists for more than 2 days, schedule a vet appointment.
Use a clean cotton pad dampened with lukewarm water. Wipe from the inner corner of the eye outward. Use a separate pad for each eye to avoid spreading any infection.
Feline herpesvirus and calicivirus do not infect humans. However, some bacterial eye infections can rarely transfer, so wash your hands after handling an infected cat to be safe.