Journal
VISION RESEARCH
Volume 49, Issue 17, Pages 2176-2186Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2009.06.008
Keywords
Human eye; Physiological optics; Peripheral refraction; Spectacles; Myopia; Hyperopia
Categories
Funding
- Marie Curie Research Training Network (RTN)
- European Community
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The recent observation that central refractive development might be controlled by the refractive errors in the periphery, also in primates, revived the interest in the peripheral optics of the eye. We optimized an eccentric photorefractor to measure the peripheral refractive error in the vertical pupil meridian over the horizontal visual field (from -45 degrees, to 45 degrees), with and without myopic spectacle correction. Furthermore, a newly designed radial refractive gradient lens (RRG lens) that induces increasing myopia in all radial directions from the center was tested. We found that for the geometry of our measurement setup conventional spectacles induced significant relative hyperopia in the periphery, although its magnitude varied greatly among different spectacle designs and subjects. In contrast, the newly designed RRG lens induced relative peripheral myopia. These results are of interest to analyze the effect that different optical corrections might have on the emmetropization process. (C) 2009 Elsevier Ltd. All rights reserved.
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