Refractive Error
The main refractive-error categories discussed are myopia, hyperopia, and astigmatism. Refractive error is blurred vision caused by incorrect focusing of light on the retina. Before receiving spectacles, most participants reported visual d…
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The main refractive-error categories discussed are myopia, hyperopia, and astigmatism. Refractive error is blurred vision caused by incorrect focusing of light on the retina. Before receiving spectacles, most participants reported visual disturbance. Common functional problems included difficulty reading classroom material from the back of the classroom.