article_snippet.sent: Macular degeneration is a breakdown of the part of the retina that allows us to see fine details in the center of vision; while glaucoma damages the nerve that connects the retina to the brain, and is often caused by fluid build-up and pressure in the eyes.
article_snippet.sent: But like those eyedrops, there are treatments that may delay the progression of early-stage glaucoma (from other drugs to surgery), and therapies that might halt further vision loss in advanced cases of macular degeneration (including an implantable telescope).
article_snippet.sent: The future looks brighter however: An animal study published this month suggests that an injection of stem cells into the eye might slow or even reverse the effects of early-stage macular degeneration.
article_snippet.sent: Studies indicate that aerobic exercise can reduce the eye pressure that leads to glaucoma, and may improve blood flow to the retina and optic nerve.
article_snippet.sent: According to the Glaucoma Research Foundation, all you need to do is raise your pulse 20% to 25% (which could mean a brisk walk) for 20 minutes, a minimum of four times a week.