Normal intraocular pressure glaucoma

The concept of glaucomatous optic nerve atrophy, depression of the optic nipples, and glaucomatous visual field defects are often attributed to elevated intraocular pressure has raised doubts. These changes also occurred in some patients without high intraocular pressure. This condition was first described by von Graefe (1857) and has since attracted the attention of ophthalmologists, and has been given various names for it. Although some doctors may have similar changes due to carotid artery calcification, alcoholism, pituitary tumors, etc., after long-term observation, many patients with these changes can not find the above reasons. For those who cannot find the exact cause, the intraocular pressure is within the normal range, and the glaucomatous optic nerve papillary atrophy and visual field damage are classified as low-tension glaucoma (hereinafter referred to as LTG). In the modern literature, a variety of normal intraocular pressure glaucoma. The incidence of LTG in the population is about 0.15%, accounting for 18-20% of all open-angle glaucoma.

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