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Custom-Q vs wavefront-optimized LASIK ablation treatment profile in high myopic Asian eyes

Poster Details

First Author: E.Mai TAIWAN

Co Author(s):    D. Chang              

Abstract Details


To compare change in asphericity and other high order aberration in Custom-Q vs Wavefront optimized (WFO) LASIK ablation profile patients in Asian population


Prospective, randomized, eye to eye study in refractive center


Utilizing our latest WaveLight®EX500 Excimer Laser (Alcon, Inc, Switzerland), a total of 62 eyes of 31 patients with myopia with or without astigmatism were randomized to receive Custom Q or WFO LASIK ablation treatment in the dominant eye, the fellow non-dominant eye received the alternate ablation procedure. LASIK flaps were created using the 150-kHz IntraLase iFS (Abbott Medical Optics, Santa Ana, CA). Main outcome measure parameter included, residual refractive error, UCDVA, Contrast sensitivity, Q-value asphericity, High order aberrations (HOAs) and subjective patient optic quality questionnaire.


The custom Q ablation group comprised of mean SE of -5.32 diopter (D) and the WFO ablation group comprise of mean SE of -5.41 diopter (D), their frequency with which Custom-Q and WFO achieved postoperative UCDVA were not statistically different from each other (P> 0.05). There were no statistically significant differences in contrast sensitivity, astigmatism, coma, trefoil. However, the change of spherical aberration was notice to be higher in WFO ablation profile. Patient questionnaire show a mild preference of Custom-Q over WFO.


Custom-Q and WFO LASIK provided similar result in myopic refractive correction, and achieved post op UCDVA, contrast sensitivity, but Custom-Q produce less changes in asphericity, less HOA changes and a marginal preference by Asian patients for optic quality. FINANCIAL INTEREST: NONE

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