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A. Denoyer, L. Denoyer, J. Halfon, P.-J. Pisella; Influence of the Corneal Incision Size on Corneal and Ocular Higher-Order Aberrations After Cataract Surgery: Microincision versus Small-Incision. Invest. Ophthalmol. Vis. Sci. 2008;49(13):5662.
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to evaluate the corneal aberrations and the ocular optical properties after microincision cataract surgery (MICS) compared to small-incision cataract surgery (SICS).
30 patients (60 eyes) aged of 76.1±7.3 years (sex ratio M/F 0.36) scheduled for cataract surgery underwent MICS through 1.7-mm incision in one eye and SICS through 2.8-mm in the other eye. Corneal aberrations, ocular aberrations and modulation transfer function (MTF) were analysed 3 months after the surgery.
Corneal root mean square (RMS) of 3rd to 6th order aberrations (p<0.001), corneal 3rd-order trefoil (p=0.001) and trefoil-like aberration (p<0.001) were lower in MICS eyes than in SICS eyes. Total ocular RMS (p=0.002), ocular 3rd-order trefoil and trefoil-like aberration (p<0.001) were lower in MICS group. Differences in ocular wavefront profiles between MICS and SICS eyes were partially correlated with the differences in corneal aberrations, and were associated with an improvement of the MTF in MICS eyes.
MICS could optimise the ocular optical properties reducing the surgically-induced corneal changes after cataract surgery.
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