Increased eye pressure isn’t always an accurate way to detect glaucoma. Sometimes you can have normal eye pressure and still have the condition. That’s called normal-tension glaucoma (NTG). Glaucoma causes damage to the optic nerve. That often results when pressure gets too high because of fluid buildup inside the eye. But nerve damage may occur without high pressure or fluid buildup, although doctors aren’t sure why. NTG is treated the same way as regular glaucoma: by trying to lower eye pressure using eye drops, laser therapy, or surgery.
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