Correcting ocular spherical aberration with soft contact lenses
JOSA A, Vol. 21, Issue 4, pp. 473-485 (2004)
http://dx.doi.org/10.1364/JOSAA.21.000473
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Abstract
Following aberroscopy, aspheric front surface soft contact lenses (SCLs) were custom-made to correct spherical refractive error and ocular spherical aberration (SA) of 18 myopic and five hypermetropic subjects (age, 20.5 ± 5 yr). On-eye residual aberrations, logMAR visual acuity, and contrast sensitivity were compared with the best-correcting spectacle lens, an equally powered standard SCL, and an SCL designed to be aberration free in air. Custom-made and spherical SCLs reduced SA (p < 0.001;p < 0.05) but did not change total root-mean-square (rms) wave-front aberration (WFA). Aberration-free SCLs increased SA (p < 0.05), coma (p < 0.05), and total rms WFA. Visual acuity remained unchanged with any of the SCL types compared with the spectacle lens correction. Contrast sensitivity at 6 cycles/degree improved with the custom-made SCLs (p < 0.05). Increased coma with aspheric lens designs and uncorrected astigmatism limit the small possible visual benefit from correcting ocular SA with SCLs.
© 2004 Optical Society of America
OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.1000) Optical design and fabrication : Aberration compensation
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1070) Vision, color, and visual optics : Vision - acuity
(330.1800) Vision, color, and visual optics : Vision - contrast sensitivity
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
Citation
Holger H. Dietze and Michael J. Cox, "Correcting ocular spherical aberration with soft contact lenses," J. Opt. Soc. Am. A 21, 473-485 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-4-473
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