Abstract
Purpose. To improve the efficiency and safety of SMILE-type lenticular surgery procedure in correction of different degrees myopia based on the use of low-energy laser parameters. Material and methods. This study includes a comparative analysis of data from 193 patients (288 eyes) operated for different degrees myopia including a number of cases with myopic astigmatism using SMILE technology with different FSL energy levels from 130 to 150 nJ. The parameters were analyzed on the 1st day and after 1 week, 1 month, 3, 6 and 12 months after surgery with assessment of NCVA, quality of life (QIRC questionnaire), general corneal wavefront aberrations (RMS), densitometry and pachymetry. Results. According to visometry, quality of life assessment, RMS, densitometry and pachymetry, the best functional results were obtained in subgroups with mild and moderate myopia on the 1st day after SMILE using an energy level in the range of 130 nJ. And in subgroups with a high degree of myopia, when using an energy level in the range of 140 nJ, no direct effect of energy on other indicators was found. Conclusion. According to the results of the study, it was found that the correction of myopic refractive error using the SMILE technology with a FSL energy level in the range of 130–140 nJ in its effectiveness on the 1st day after surgery exceeds the previously used energy levels (150 nJ) in terms of the quality of restoration of visual functions and does not have a negative effect on other parameters of the cornea. Key words: myopia, lenticular surgery, femtosecond laser energy, SMILE
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