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Persistent Pupillary Membranes in Dogs

Dog getting eyes checked at a veterinary opthamologist


Strands of tissue in the eye. They are remnants of blood vessels, which supplied nutrients to the developing lens of the eye before birth. Normally these strands are gone by 4 or 5 weeks of age.

Depending upon the location and extent of these strands, they may interfere with vision. Generally persistent pupillary membranes cause no problems.

However if attached to the cornea or lens, the strands can cause opacities which may interfere with vision. The cataracts that can occur with PPM usually don't worsen.


There is no treatment for the membranes themselves and in most cases there are no associated problems.

If there is significant edema or "bluing" of the cornea due to adhesions, hyperosmotic eye drops may help. Surgery may be required if there are extensive cataracts.

When your dog has a health issue the last thing you want to worry about is money. Pet health insurance helps pay for veterinary care when your puppy or dog needs it the most.

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