Why Does My Cat’s Pupil Look Different in One Eye? Understanding Unequal Pupils

Single cat Eye.

Cats’ pupils naturally change size throughout the day, widening in dim light and narrowing when things get bright. But if you suddenly notice that one pupil looks larger than the other, it’s worth paying attention. 

Unequal pupils, known as anisocoria, can have many possible causes, including problems involving the eye or nervous system. At MarketPlace Veterinary Hospital in El Dorado Hills, California, our team can evaluate changes in your cat’s eyes, and help determine what may be behind them.

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