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Black Cat’s Eye Reveals Rare Congenital Condition

By Petfinnly Cat News Nov 5, 2026
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Jarrettsville Vet Center posted a video of a black cat whose eye showed an unusual structure. The clinic asked followers to guess what they saw, then explained the finding was a persistent pupillary membrane (PPM). PPM is a congenital eye condition that occurs when tiny strands of tissue that normally disappear during eye development remain attached inside the eye. These remnants can appear as delicate strands, threads, or web-like structures across the pupil or connecting different areas of the eye. The condition is uncommon in cats, and many cats with PPM do not need treatment. However, membranes that attach to the lens or cornea can sometimes create complications. PPM may be visible when someone looks closely at the eye.

Key takeaways

  • PPM is a congenital eye condition caused by persistent tissue strands.
  • The strands can form delicate patterns across the pupil or connect to other eye structures.
  • The condition is uncommon in cats and often requires no treatment.
  • Membranes attached to the lens or cornea can cause complications.
  • PPM can be seen when the eye is examined closely.

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Originally reported by iHeartCats. Read the full article.

Cover photo by Dima Zimakov via Pexels.

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