contrast sensitivity after wave frontguided lasik purpose to compare the effects on contrast sensitivity of wave frontguided wfg versus standard lasikdesign prospective nonrandomized comparative clinical studyparticipants twentyfour eyes of 13 consecutive patients mean age 25284 years spherical equivalent 05 to 425 diopters d treated with wfg lasik wavelightallegretto scanningspot laser and wave front analyzer and 22 eyes of 12 consecutive patients mean age 28491 years spherical equivalent 075 to 45 d treated with standard lasik wavelightallegretto scanningspot lasermethods bestcorrected contrast sensitivity was measured before and 1 month after surgery in both the wfg lasik group and the standard lasik group a sinewave contrast sensitivity test functional acuity contrast test was used to measure contrast sensitivity at 5 spatial frequencies 15 3 6 12 and 18 cyclesdegree we compared the lasikinduced changes in contrast sensitivity in each groups at each spatial frequencymain outcome measure the effect on contrast sensitivity of wfg lasik versus standard lasikresults uncorrected visual acuity of 2020 or better was achieved by 72 of eyes treated with wfg lasik and by 70 of the eyes treated with standard lasik one month after lasik 88 of the contrast sensitivity measurements improved in the wfg lasik group whereas in the standard lasik group only 40 of the contrast sensitivity measurements improved the contrast sensitivity improvement was significantly larger in the wfg lasik group at all spatial frequencies p005 the wfg lasik patients had a negative correlation between the changes in contrast sensitivity and the preoperative refractive errorconclusions the ability of wfg lasik to correct optical aberrations results in significantly improved contrast sensitivity compared with standard lasik 1 month after surgery