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Glaucoma is a group of eye
diseases that lead to permanent damage to the optic nerve, which can then
lead to vision loss, even blindness. Researchers at the University of Toronto
and St. Michael's Hospital have found evidence that glaucoma also affects
the nerve cells in brain centers that process color and motion. The scientists
measured the total number of nerve cells in the brain's visual centers in
normal monkeys and in monkeys that had glaucoma. The mechanisms of cell death
in the brain are still unknown, but this finding is a "major breakthrough
in understanding this disease," according to the authors of the study.
The research appears in the March issue of Archives of Ophthalmology.
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