Low-tension glaucoma

Glaucoma of optic atrophy, depending and glaucoma visual field defects often attributed elevation of intraocular pressure that concept has given rise to suspicion. Because some patients with high intraocular pressure of these changes have taken place. This first by von Graefe (1857) described, From then have aroused the attention of ophthalmologists, and have done a variety of names. Although some doctors in carotid artery calcification, alcoholism, etc. Some pituitary tumor lesions are likely to cause similar changes, but after long-term observation, many patients with these changes can not find the above reasons. No exact reasons for such, the intraocular pressure in the normal range, but also has glaucoma nipple atrophy of the optic nerve and visual field damage Depression of the focus on the classification of low-tension glaucoma (low tention glaucoma hereinafter referred to LTG). Modern literature for a variety of normal tension glaucoma. LTG crowd in the incidence rate of about 0.15 percent, of all open-angle glaucoma 18 ~ 20%.