Efficacy, predictability, and safety of small incision lenticule extraction: 6-months prospective cohort study
نویسندگان
چکیده
BACKGROUND To report our experience with small incision lenticule extraction ("SMILE") for myopia treatment. METHODS In this prospective clinical study, we evaluated 447 eyes from 224 patients with myopia, with and without astigmatism. We followed the patients for 6 months after SMILE. RESULTS The mean (±standard deviation, SD) spherical equivalent was -6.75 ± 1.65 diopters (D) preoperatively and -0.21 ± 0.37 D at 6 months postoperatively. Our data showed that 97.9% of eyes were within ±1.0 D and 86.1% were within ±0.5 D of the intended correction. Furthermore, 79.8% had an uncorrected distance visual acuity (UDVA) of 0 logMAR or less (20/20 or better in the Snellen equivalent) 6 months after surgery. Additionally, 48.5% remained unchanged, 41% gained one line of corrected distance visual acuity (CDVA), 7.2% gained two lines of CDVA, 3.3% lost one line of CDVA, and 0.3% lost two or more lines of CDVA. Age was the only predictor for worsening UDVA at 6 months postoperatively in linear regression analyses (0.07 decrease logMAR per increased 10 years of age; P < 0.05). No predictor showed an association with error in spherical equivalent refraction at 6 months postoperatively. CONCLUSIONS SMILE is an effective and safe refractive surgery. Age was the only predictor that influenced visual outcome, but its effect appeared clinically insignificant. Faster visual recovery is also expected with improved surgical technique.
منابع مشابه
Efficacy, safety, predictability, contrast sensitivity, and aberrations after femtosecond laser lenticule extraction.
PURPOSE To compare femtosecond lenticule extraction and small-incision lenticule extraction to treat moderate to high myopia. SETTING Department of Ophthalmology, Aarhus University Hospital, Aarhus, Denmark. DESIGN Prospective clinical single-masked paired-eye study. METHODS An intrastromal lenticule was cut by a femtosecond laser and manually extracted. In femtosecond lenticule extractio...
متن کاملAuthor ' s response to reviews Title : Efficacy , predictability , and safety of small incision lenticule extraction : prospective cohort study
متن کامل
Safety and efficacy of VisuMax® circle patterns for flap creation and enhancement following small incision lenticule extraction
BACKGROUND The purpose of this case series is to evaluate the safety and efficacy of VisuMax® Circle patterns in eyes that have undergone small incision lenticule extraction, thus creating a flap to perform an enhancement procedure or residual lenticule extraction. METHODS This prospective, single center, case study series evaluated the use of a VisuMax® Circle pattern to create a corneal fla...
متن کاملA Nomogram to Improve Predictability of Small-Incision Lenticule Extraction Surgery
BACKGROUND This study aimed to determine and validate that use of a nomogram could enhance the predictability of small-incision lenticule extraction (SMILE) surgery. MATERIAL AND METHODS 195 eyes from 98 patients were enrolled in group 1, and 46 eyes from 26 patients in group 2. Uncorrected and corrected distance visual acuity (UDVA and CDVA), manifest refraction spherical equivalent (SE) preop...
متن کاملCorneal biomechanical effects: small-incision lenticule extraction versus femtosecond laser-assisted laser in situ keratomileusis.
PURPOSE To compare the biomechanical properties of the cornea after small-incision lenticule extraction (lenticule extraction group) with those after femtosecond laser-assisted laser in situ keratomileusis (femtosecond LASIK group). SETTING Tianjin Eye Hospital & Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Medical University, Tianjin, China. DESIGN Pro...
متن کامل