Visual image quality after small-incision lenticule extraction compared with that of spectacles and contact lenses

PURPOSE To assess the influence of small-incision lenticule extraction (SMILE) for high myopia on visual image quality assessed by logarithm Strehl ratio (logVSX) and put this into a clinical context pairwise comparing logVSX postoperative eyes with those myopic controls wearing spectacles and/or contact lenses. SETTING University hospital. DESIGN Prospective cross-sectional study. METHODS Patients spherical equivalent at least 6.00 diopters treated SMILE aimed emmetropia correspondingly corrected lenses were included. The calculation was divided habitual based wavefront aberration measurement directly optimal calculated in theoretical through-focus experiment to obtain best-achievable logVSX. RESULTS A total 117 61 patients 64 34 did not affect but worsened (P < .001). statistically significantly worse compared = .002). both .01) .003). There no significant difference or between CONCLUSIONS does decreases slightly. is than spectacles, spectacles. either