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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: N C Med J. 2015 Sep-Oct;76(4):211–218. doi: 10.18043/ncm.76.4.211

FIGURE 2. Visual Impairment and Causes in Glaucoma Patients.

FIGURE 2

A. Of the 1,454 patient records reviewed, 196 (13%) met criteria for legal blindness; 352 (24%) were monocular; and 100 (7%) were not legally blind but had levels of visual impairment that restricted their driving.

B. Of the 196 glaucoma patients who met criteria for legal blindness, 94 patients were blind from glaucoma (represented by black dots). Sixty-nine patients were blind from glaucoma as well as another ocular cause (for example, neovascular glaucoma due to advanced proliferative diabetic retinopathy, represented by grey dots), and 33 glaucoma patients were blind from non-glaucomatous causes (for example, age-related macular degeneration and retinal vascular occlusive disease, represented by light dots). The black and grey dots represent the patients with glaucoma-related blindness; these glaucoma patients are described in the tables as the “blind” group.