What is low-tension glaucoma?

Updated: Jun 10, 2020
  • Author: Mitchell V Gossman, MD; Chief Editor: Hampton Roy, Sr, MD  more...
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Low-tension glaucoma (LTG) is a chronic optic neuropathy that affects adults. Its features parallel primary open-angle glaucoma (POAG), including characteristic optic disc cupping and visual-field loss, with the exception of a consistently normal intraocular pressure (IOP), ie, less than 22 mm Hg. [1] Although the upper limit of "normal" is fuzzy and arbitrary, cases of low-tension glaucoma tend not to be with truly low pressures but rather with pressures considered to be in the moderate or upper-normal range, however "normal" is defined.

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