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b'Vision researchers are trying to understand what causes glaucoma, a disease that mostly affects older people and can cause blindness. Upstate\'s Vision researchers are trying to understand what causes glaucoma, a disease that mostly affects older people and can cause blindness. Upstate\'s Audrey Bernstein, PhD Audrey Bernstein, PhD, says genetic components likely play a role, along with age-related cellular changes or environmental factors. She is studying some cellular similarities glaucoma has with other age-related degenerative diseases, including Alzheimer\'s, Parkinson\'s and Huntington\'s diseases., says genetic components likely play a role, along with age-related cellular changes or environmental factors. She is studying some cellular similarities glaucoma has with other age-related degenerative diseases, including Alzheimer\'s, Parkinson\'s and Huntington\'s diseases.'