Characterization of wavefront aberration in myopes

Objective To investigate the characteristics of wavefront aberration in different myopes.Methods One hundred and five myopic out-patients(male 54,female 51)between March and July 2008 in Guangxi visual science and optometry center,aged from sixteen to thirty six,and refractive power ranged from-0.50 to-10.50 diopters(spherical equivalent)were enrolled retrospectively.And the myopes were divided into low,moderate and high groups.WaveScan system(Visx corp.made in USA)was used to capture each myopic wavefront aberration images.Root mean square wavefront error was used as a parameter of myopic optical quality.One-way ANOVA and LSD were made to compare to wavefront aberration differences among the three groups by SPSS 13.0 version software.Results LSD analysis showed that there were significant differences among the three groups in total aberrations(F=203.044,P0.01),and the higher of myopia,the larger of total aberrations.But total higher-order aberration,trefoil,coma and spherical aberration didn't show significant difference among the three groups(P0.05).And these four indices demonstrated a descending trend orderly in each group.Conclusion Myopic total aberration would be increased with the growth of myopia,but higher-order aberrations just shew individual differences among the myopes in different levels.