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Reports the effects of ametropia on peripheral refraction in diverse refractive groups, suggesting clinical relevance.
Peripheral refraction was measured in 62 eyes along the horizontal meridian from 60° nasally to 60° temporally, using a Topcon refractometer. The amount of astigmatism was found to increase progressively, although less than predicted theoretically, toward the periphery in 91% of the eyes. Dividing the sample into myopes, hyperopes, and near‐emmetropes showed that the type of astigmatism differed significantly with each group of eyes and that this factor played a most important role.
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Michel Millodot (1981) studied this question.
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