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KMID : 1038920150140020074
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Annals of Optometry and Contact Lens
2015 Volume.14 No. 2 p.74 ~ p.78
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Effect of Corneal Higher-Order Aberrations on the Intraocular Straylight
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Lyu Byul
Lim Byung-Su
Hwang Hyung-Bin
Chung Sung-Kun
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Abstract
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Purpose: To investigate the relation between corneal higher-order aberrations and intraocular straylight.
Methods: Fifty eyes with an ZCB00 (Abbott Medical Optics, Santa Ana, CA, USA) were prospectively evaluated. Ocular higher- order aberrations were measured for a 4-mm pupil using Pentacam® (Oculus Inc., Dutenhofen, Germany). Best corrected visual acuity (BCVA) and Straylight were measured at preoperation, postoperative 1 month, and 2 month using C-Quant straylight meter (Oculus GmbH, Wetzlar, Germany).
Results: BCVA and Straylight were significantly improved after operation (p < 0.001). There were no statistically significant differences in corneal higher-order aberration root mean square, including spherical, coma, or trefoil aberration, at two months postoperative. Spearman correlation analysis revealed that total higher-order aberration (R = 0.315, p = 0.026) and spherical aberration (R = 0.297, p = 0.036) were significantly associated with straylight, but coma aberration (R = 0.239, p = 0.095), trefoil aberration (R = -0.036, p = 0.804) were not.
Conclusions: Corneal higher-order aberration of the eye and straylight that influeces visual quality have a positive correlation. And measurement of straylight using C-Quant may reflect the corneal higher-order aberrations.
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KEYWORD
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C-Quant, Higher-order aberrations, Pentacam, Straylight, Visual quality
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