Full Text:   <2192>

CLC number: R77

On-line Access: 

Received: 2005-09-26

Revision Accepted: 2006-07-10

Crosschecked: 0000-00-00

Cited: 4

Clicked: 5149

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE B 2007 Vol.8 No.3 P.177-180

http://doi.org/10.1631/jzus.2007.B0177


Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient


Author(s):  DU Chi-xin, SHEN Ye, WANG Yang

Affiliation(s):  Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China

Corresponding email(s):   duchixin@126.com, syzyec@yahoo.com.cn

Key Words:  Myopic LASIK (laser in situ keratomileusis), Higher order aberrations, Customized ablation


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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Baek, T., Lee, K., Kagaya, F., Tomiokoro, A., Amano, S., Oshika, T., 2001. Factors affecting the forward shift of posterior corneal surface after laser in situ keratomileusis. Ophthalmology, 108(2):317-320.

[2] Miller, J.M., Anwaruddin, R., Strub, J., Schwiegerling, J., 2002. Higher order aberrations in normal, dilated, intraocular lens, and laser in situ keratomileusis corneas. J. Refract Surg., 18(5 Suppl.):S579-S583.

[3] Moreno-Barriuso, E., Lloves, J.M., Marcos, S., Navarro, R., Llorente, L., Barbero, S., 2001. Ocular aberrations before and after myopic corneal refractive surgery: LASIK-induced changes measured with laser ray tracing. Invest. Ophthalmol. Vis. Sci., 42(6):1396-1403.

[4] Mrochen, M., Kaemmerer, M., Seiler, T., 2000. Wavefront-guided laser in situ keratomileusis: early results in three eyes. J. Refract Surg., 16(2):116-121.

[5] Mrochen, M., Kaemmerer, M., Seiler, T., 2001a. Clinical results of wavefront-guided laser in situ keratomileusis 3 months after surgery. J. Cataract Refract. Surg., 27(2):201-207.

[6] Mrochen, M., Kaemmerer, M., Mierdel, P., Seiler, T., 2001b. Increased higher-order optical aberrations after laser refractive surgery: a problem of subclinical decentration. J. Cataract Refract. Surg., 27(3):362-369.

[7] Nuijts, R.M., Nabar, V., Hament, W.J., Eggink, F.A., 2002. Wavefront-guided versus standard laser in situ keratomileusis to correct low to moderate myopia. J. Cataract Refract. Surg., 28(11):1907-1913.

[8] Oshika, T., Klyce, S.D., Applegate, R.A., Howland, H.C., EI Danasoury, M.A., 1999. Comparison of corneal wavefront aberrations after photorefractive keratectomy and laser in situ keratomileusis. Am. J. Ophthalmol., 127(1):1-7.

[9] Phusitphoykai, N., Tungsiripat, T., Siriboonkoom, J., Vongthongsri, A., 2003. Comparison of conventional versus wavefront-guided laser in situ keratomileusis in the same patient. J. Refract Surg., 19(2 Suppl.):S217-S220.

[10] Schweigerling, J., Snyder, R.W., Lee, J.H., 2002. Wavefront and topography: kerato-induced corneal changes demonstrate that both are needed for customized ablation. J. Refract Surg., 18(5 Suppl.):S584-S588.

[11] Seitz, B., Torres, F., Langenbucher, A., Behrens, A., Suarez, E., 2001. Posterior corneal curvature changes after myopic laser in situ keratomileusis. Ophthalmology, 108(4):666-672.

[12] Vongthongsri, A., Srivannaboon, S., Horatanaruang, O., Nariptaphan, P., 2000. Laser in situ keratomieusis corneal flap creation with the Nidek MK-2000 and the Carriazo Barraquer microkeratomes. J. Refract Surg., 16(2 Suppl.): S272-S275.

[13] Vongthongsri, A., Phusitphoykai, N., Naripthapan, P., 2002. Comparison of wavefront-guided customized ablation vs conventional ablation in laser in situ keratomileusis. J. Refract Surg., 18(3 Suppl.):S332-S335.

[14] Wilson, S.E., Mohan, R.R., Hong, J.W., Lee, J.S., Choi, R., Mohan, R.R., 2001. The wound healing response after laser in situ keratomileusis and photorefractive keratectomy: elusive control of biological variability and effect on custom laser vision correction. Arch. Ophthalmol., 119(6):889-896.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2022 Journal of Zhejiang University-SCIENCE