Oman Medical Journal (Jan 2020)
Knowledge, Attitudes, and Practices Related to Common Eye Diseases among the Omani Population: How Far Have We Come?
Abstract
Visual impairment is a form of visual loss that interferes with an individual’s daily activities of living and is secondary to a functional etiology in the eye or visual system. Based on the patient’s visual acuity and visual field, visual impairment can be classified mainly into two main categories: moderate visual impairment, defined as a best-corrected visual acuity (BCVA) between 20/70 to 20/200 or a visual field of ≤ 20 degrees diameter in the better-seeing eye, and legal blindness, defined as a BCVA between ≤ 20/200 or a visual field of ≤ 20 degrees diameter in the better-seeing eye.
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