CLC number: R77
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Received: 2005-09-26
Revision Accepted: 2006-07-10
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DU Chi-xin, SHEN Ye, WANG Yang. Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient[J]. Journal of Zhejiang University Science B, 2007, 8(3): 177-180.
@article{title="Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient",
author="DU Chi-xin, SHEN Ye, WANG Yang",
journal="Journal of Zhejiang University Science B",
volume="8",
number="3",
pages="177-180",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.B0177"
}
%0 Journal Article
%T Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient
%A DU Chi-xin
%A SHEN Ye
%A WANG Yang
%J Journal of Zhejiang University SCIENCE B
%V 8
%N 3
%P 177-180
%@ 1673-1581
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.B0177
TY - JOUR
T1 - Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient
A1 - DU Chi-xin
A1 - SHEN Ye
A1 - WANG Yang
J0 - Journal of Zhejiang University Science B
VL - 8
IS - 3
SP - 177
EP - 180
%@ 1673-1581
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.B0177
Abstract: Purpose: To verify whether there exists any difference in higher order aberrations after undergoing myopic LASIK (laser in situ keratomileusis) with conventional ablation and customized ablation in different eyes of the same patient. Methods: This was a prospective randomized study of 54 myopic eyes (27 patients) that underwent LASIK using the Nidek EC-5000 excimer laser system (Nidek, Gamagori, Japan). Topography-guided customized aspheric treatment zone (CATz) was used in the first eye of the patient (study group) and the other eye of the same patient was operated on with conventional ablation (control group). higher order aberrations [root-mean-square (RMS) in the 5-mm zone] of both groups were observed with the Nidek OPD-Scan aberrometer before and 3 months after LASIK. Preoperative mean refractive error was similar between two eyes of the same patient (t=−0.577, P>0.05). Results: Preoperatively, higher order aberrations (RMS in the 5-mm zone) in the CATz ablation and conventional groups were (0.3600±0.0341) µm and (0.2680±0.1421) µm, respectively. This difference was not statistically significant (t=1.292, P>0.05). Three months after LASIK, higher order aberrations (RMS in 5-mm zone) in the CATz ablation and conventional groups were (0.3627±0.1510) µm and (0.3991±0.1582) µm, respectively. No statistically significant difference was noted between pre- and postoperative higher order aberrations in the CATz group (t=−0.047, P>0.05). However, a statistically significant increase in higher order aberrations was observed after conventional ablation (t=−5.261, P<0.05). A statistically significant difference was noted in the increase of higher order aberrations after LASIK between groups (t=−2.050, P=0.045). Conclusion: LASIK with conventional ablation and topography-guided CATz ablation resulted in the same BSCVA (best spectacle-corrected visual acuity) 3 month after LASIK. higher order aberrations were increased, but the increase of higher order aberrations after customized ablation treatment was less than that after conventional ablation.
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