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Normal Tension Glaucoma

This type of glaucoma is also known as low-tension glaucoma or normal pressure glaucoma. In this type of glaucoma, the optic nerve is damaged. The intraocular pressure is not very high, even though damage is caused to the optic nerve. Some people are at higher risk to form this type of glaucoma, including those with a family history of normal tension glaucoma, people of Japanese ancestry, and people with a history of systemic heart disease, such as irregular heart rhythm.