Comparison of NIDEK CATz wavefront-guided LASIK to traditional LASIK with the NIDEK CXII excimer laser in myopia.
OBJECTIVE
To compare the visual and refractive outcomes in myopic LASIK between wavefront-guided and traditional treatment.


METHODS
The study included 162 eyes of 81 myopic patients undergoing LASIK by one surgeon. The right eye of each patient underwent customized LASIK with the NIDEK NAVEX laser system (NIDEK, Gamagori, Japan) (study group); the left eye of each patient underwent traditional LASIK with the NIDEK CXII excimer laser system (control group).


RESULTS
No significant differences were noted in refractive error, uncorrected visual acuity, and best spectacle-corrected visual acuity after surgery between the two groups (t test, P>.05). Postoperatively, 3.7% of patients in the study group reported glare, which was significantly lower than 12.4% in the control group (chi-square test, .01<P<.05). Higher order aberrations increased after surgery in both groups, but less increase was noted in patients in the study group. A statistically significant reduction was noted in the postoperative increase of Zernike coefficients C7, C8, and C12 in the study group compared to the control group (t test, P<.05).


CONCLUSIONS
Customized LASIK significantly reduces the rate of postoperative glare and induction of higher order aberrations compared to traditional LASIK.
He
Rui
R
Shanxi Eye Hospital, Taiyuan, Shanxi, China. he.r@163.com
Qu
Min
M
Yu
Shun
S
D000293:Adolescent; D000328:Adult; D003319:Corneal Stroma / Q000503:physiopathology / Q000601:surgery*; D019781:Corneal Topography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000295:instrumentation*; D008297:Male; D009216:Myopia / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications / Q000517:prevention & control; D012029:Refraction, Ocular; D012189:Retrospective Studies; D016896:Treatment Outcome; D014792:Visual Acuity