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Iowa State University researcher identifies eye disease in canines
Date:3/4/2008

IMR has only recently been identified, there are no statistics on how many dogs this disease affects.

Grozdanic has also developed a test to differentiate the two types of retinopathy. Grozdanic shines colored lights in the dog's eyes to see if the pupils constrict. If the pupils constrict poorly while the doctor uses the red light, and have normal constriction when blue light is used, the patient most likely suffers from IMR. If the eyes respond to blue lights, but not red lights, then the diagnosis is SARDS.

Tests show SARDS-affected eyes have almost no electrical activity. IMR-affected eyes have some electrical activity, and the retinal cells are not destroyed but have only lost function. These are the retinal cells that Grozdanic thinks can function again now that the origin of the problem is known.

In his work with canine patients with IMR during the past few years, Grozdanic has restored sight in several dogs.

According to Grozdanic, these two diseases are similar to illnesses that afflict humans, so treatment for people may not be far off.

"This was a giant leap. We are getting better at understanding it, and based on this information, we may be able to modify and improve treatment of dogs and eventually human patients," said Grozdanic.


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Contact: Sinisa Grozdanic
sgrozdan@iastate.edu
515-294-4900
Iowa State University
Source:Eurekalert

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