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My dog has unequal pupils and one eye is draining, what's wrong?

Updated On September 23rd, 2025

My dog has unequal pupil sizes and one eye has drainage

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Answered By Mara Howard, DVM

Veterinarian

Published on October 27th, 2017

Thanks for using Petco Pet Education Center, formerly Petcoach! I would recommend he be evaluated by a veterinarian as soon as possible. Unequal sized in pupils can be due to either an underlying ocular or neurological issue, which should be seen by a veterinarian to determine which the possible cause is and any steps that need to be taken. Good luck!

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