To compare the efficacy to different profiles, direct head-to-head studies had been conducted. In one previous review study revealed that TG LASIK provided patient with better uncorrected visual acuity (UCVA) than WFO LASIK and WFG LASIK. In recent previous contralateral eye studies also showed that TG LASIK induced less postoperative higher-order aberration than WFO LASIK. However, these studies included only low-to-moderate myopia patients, for patients with high myopia (spherical equivalent \> 6D), the effect of TG LASIK comparing with WFO LASIK had not been reported before. The aim of our study is to analyze and compare the visual performance of TG LASIK and WFO LASIK in high myopia and low-to-moderate myopia patients, , particularly UCVA, corrected distance visual acuity (CDVA), contrast sensitivity (CS), and wavefront aberration.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
21
Topoguided ablation profile on dominant eye
Wavefront optimized ablation profile on non-dominant eye
Taipei Nobel Eye Clinic
Taipei, Taiwan
Visual acuity
uncorrected visual acuity and corrected distance visual acuity
Time frame: 3 months after surgery
Corneal wavefront analysis
horizontal coma aberration (Z 3,1), spherical aberration (Z 4,0), and trefoil aberration
Time frame: 3-months postoperative visit
Contrast sensitivity
4 spatial frequencies: 3, 6, 12, and 18 cycles per degree (cpd).
Time frame: 3-months postoperative visit
Quality of vision questionnaire
A 11-item questionnaire, item scores range from 0 to 10 and higher item scores in questionnaire indicated more difficulty in achieving specific visual tasks
Time frame: 3-months postoperative visit
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