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PPM
Can you see this? Do you know what this is?
Persistent pupillary membranes, PPMs as they
are often called are common findings on CERF examinations. They may or may not be a
problem in a breed and/or individual dogs. PPMs are remnants of a fetal structure called
the pupillary membrane. This membrane covers the pupil before an animal is born. It is
part of the blood supply to the developing lens (the structure in the eye that focuses
light on the retina). Normally the pupillary membrane completely absorbs before birth in
foals and calves but is partially present and continues to disappear in neonatal dogs.
Can you imagine trying to read this?
This is probably what dogs with PPM suffer with on a daily basis. Click here for a clear copy to
learn more about PPM.
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