Comparison of the optical quality between small incision lenticule extraction and femtosecond laser LASIK

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Abstract

Purpose. To investigate the visual quality after SMILE and Femto-LASIK. Methods. About 123 eyes from 63 patients were enrolled in this study. The parameters were measured preoperatively and 1 week, 1 month, and 3 months postoperatively using Sirius System. Results. The MTF curve increase slightly from low to high frequency at 3 mm and 6 mm pupil diameter after SMILE surgery (P<0.05) during the follow-up time comparing with the preoperative values. And the SR has a significant increase at various pupil diameters as well (P<0.05). However, there was little increase for MTF at intermediate to high frequency at 3 mm pupil diameter after Femto-LASIK procedure (P<0.05). And the SR had only significant increase at 3 mm pupil diameter. Between SMILE and Femto-LASIK, there was no statistic difference both in MTF and SR (P>0.05) at 3 mm pupil diameter at vertical and horizontal meridian. However, significant difference was found in MTF at low to mediate frequency at 6 mm pupil diameter at vertical meridian at 1 week postoperatively (P<0.05). Conclusions. Both SMILE and Femto-LASIK show a great improvement in optical quality at small diameter. It was found that SMILE shows better optical quality than Femto-LASIK at larger pupil diameter, which might be good for the night vision.

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Jin, Y., Wang, Y., Xu, L., Zuo, T., Li, H., Dou, R., & Zhang, J. (2016). Comparison of the optical quality between small incision lenticule extraction and femtosecond laser LASIK. Journal of Ophthalmology, 2016. https://doi.org/10.1155/2016/2507973

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