No / 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-meansquare (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.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/3471 |
| Date | January 2004 |
| Creators | Cox, Michael J., Dietze, Holger H. |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article, No full-text in the repository |
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