People with glaucoma have difficulty with out loud and silent reading, a group of American researchers has found. The group says that the greatest impact was observed during sustained silent reading, and suggest that this may be due to reading fatigue.
For the study, which is published in the journal Investigative Ophthalmology and Visual Science, the investigators compared the reading speed of glaucoma patients with bilateral visual field loss to that of normally sighted individuals (controls).
They found that the out loud reading speed of glaucoma patients was about 6-7% slower than controls, while sustained silent reading speed was 16% slower.
Furthermore, glaucoma patients were two times more likely to decrease their reading speed my 0.5 words per minute or more during sustained silent reading than controls. “It appears that persons with glaucoma fatigue during silent reading resulting in slower reading over time,” conclude the researchers.
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