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J.-M. Lee, D.-J. Lee, W.-J. Jung, H.-B. Ahn, S.-H. Rho, W.-C. Park; Comparison Between Anterior Corneal Aberration and Ocular Aberration in Laser Refractive Surgery. Invest. Ophthalmol. Vis. Sci. 2008;49(13):2904.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate change of anterior corneal aberration (Pentacam®) and ocular aberration (aberrometer, LADARWave®), and to examine their correlation in laser refractive surgery.
Sixty-six eyes of 33 patients who underwent laser refractive surgery were retrospectively reviewed. Anterior corneal and ocular aberrations were measured by Pentacam® and aberrometer (LADARWave®) respectively - before and 1 and 3 months after operation. We compared changes of RMS (root mean square) values of coma, spherical aberration, and total high order aberration (HOA).
Preoperative ocular aberration measured low level, but as a result of laser refractive surgery, anterior corneal aberration and ocular aberration were increased by similar degree. There were no statistically significant differences of internal optics aberration values- ocular aberration minus anterior corneal aberration - in coma, spherical aberration, and total HOA. Anterior corneal and ocular aberrations showed statistically significant correlations at 1 and 3 months after operation.
Before operation, internal optics aberration compensated anterior corneal aberration effectively. However, the increase of anterior corneal aberration by laser refractive surgery exceeded compensation of internal optics, and anterior corneal and ocular aberrations were increased by similar degree. After operation, correlation between anterior corneal and ocular aberrations became statistically significant because of increased proportion of anterior corneal aberration in ocular aberration.
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