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My cat has clear, watery eye discharge, but seems fine. What is it?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed

My cat has some sort of discharge coming from her eye. It’s kind of clear and runny almost looks like a tear. What could it be? It doesn’t seem to be bothering her.

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2 Answers

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on March 11th, 2018

A clear discharge can be caused by some irritation such as dust or excessive draft. This would not be concerning and would pass within a few hours. Sometimes cats have an obstructed tear duct and then this could also cause a transparent watery discharge. Another cause would be a viral respiratory infection. In that case however , both eyes would be affected. Monitor the discharge and if it turns yellow or green or milky she will need to be seen by a vet for a bacterial respiratory infection.

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    Answered By Dr. Elizabeth

    Veterinarian

    Published on January 15th, 2019

    Sometimes it will go away. Definitely watch and make sure you do not notice any redness to the eye or colored discharge or squinting. This would indicate a further problem. I commonly start these cats on a supplement called Lysine as it can help if this is a viral cause. If he is still have discharge after another week, then I think it’s best to take him in. He may need some eye drops to clear up the situation. Obviously if he looks worse at any time, take him in as well. I hope this is helpful and please feel free to post any additional questions.

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