Visumax Femtosecond Laser Impact on Myopic Residual Refractive Error
Published: October 16, 2021
Authors
Kaushal Kishor Sahu, Sachitanand Singh and Renu Thakur
Keywords
Myopia, LASIK, PRK, ReLex, FLEx, Refractive correction, Residual Refractive Error, SMILE Surgery
Abstract
Background: Compare the residual refractive power following “small incision lenticule extraction” (SMILE) surgical correction in myopic patients with moderate to severe myopia and myopic astigmatism.
Aim: To study the pre op with post op residual refractive status comparison in low to high myopia and myopic astigmatism patients under gone ReLEx SMILE operation.
Methods: Prospective comparative analysis with 65 eyes of 33 patients classified into three groups19: mild myopia -1.00 to -3.00 D, moderate myopia -3.25 to -6.00 D, and high myopia -6.25 to -10.00 D, comprising spherical and cylindrical using spherical equivalent (SE). Using the SMILE surgery, each patient were corrected for myopic refractive error. Retinoscope was conducted preoperatively and postoperatively one day and one month following surgery, respectively. Results: Pre op 1 day and 1 month are showing a significant and gradual decrease where low and high myopia are compared, which is statistically significant for both one day (0.007) and one month (0.001) post operatively, but low to moderate (0.282) and moderate to high (0.147) post operatively 1 day and 1 month it is not statistically significant. This indicates that high myopia has greater residual power than low and moderate myopia.
Conclusion: This research concludes that residual power increases as myopia increases in severity. As the objective residual power after SMILE surgery is less than +/- 0.50D in approximately 75% – 80% of eyes, SMILE surgery is a suitable alternative for refractive surgery correction with less complications than other refractive surgery techniques.
References
- Berkowitz, R. (2017). Enhancing vision: Rachel Berkowitz reports on how laser-based systems are advancing vision correction surgeries. Electro Optics, (276), 18-23.
- Ganesh, S., Patel, U., & Brar, S. (2015). Posterior corneal curvature changes following refractive smallincision lenticule extraction. Clinical Ophthalmology, 1359-1364.
- Kamiya, K., Shimizu, K., Igarashi, A., & Kobashi, H. (2015). Visual and refractive outcomes of small incision lenticule extraction for the correction of myopia: 1-year follow-up. BMJ open, 5(11), e008268.
- Naing, L., Winn, T. B. N. R., & Rusli, B. N. (2006). Practical issues in calculating the sample size for prevalence studies. Archives of orofacial Sciences, 1, 9-14.
- Ramirez-Miranda, A., Navas, A., De La Mota, A., Ramirez- Luquín, T., & Graue-Hernández, E. (2013). Small Incision Lenticule Extraction (SMILE) procedure for the correction of myopia and myopic astigmatism: What we have learned after 120 eyes in 1 year.
- Investigative Ophthalmology & Visual Science, 54(15), 3712-3712.
- Recchioni, A., Hartwig, A., Dermott, J., Vaswani, S., Bhatt, J., Morris, R., & O’donnell, C. (2018). Early clinical outcomes after small incision lenticule extraction surgery (SMILE). Contact Lens and Anterior Eye, 41(1), 132-135.
- Sekundo, W., Kunert, K. S., & Blum, M. (2011). Small incision corneal refractive surgery using the small incision lenticule extraction (SMILE) procedure for the correction of myopia and myopic astigmatism: results of a 6 month prospective study. British Journal of Ophthalmology, 95(3), 335-339.
- Shah, R., Shah, S., & Sengupta, S. (2011). Results of small incision lenticule extraction: all-in-one femtosecond laser refractive surgery. Journal of Cataract & Refractive Surgery, 37(1), 127-137.
- Teus, M. A., & Garcia-Gonzalez, M. (2014). Comparison of the visual results after small incision lenticule extraction and femtosecond laser-assisted LASIK for myopia. Journal of Refractive Surgery, 30(9), 582-582.
- Verdaguer, P., El-Husseiny, M. A., Amat, D. E., Castellón, O. G., Manero, F., Pérez, M. B., & Villanueva, J. L. G. (2013). Small incision lenticule extraction (SMILE) procedure for the correction of myopia and myopic astigmatism. Journal of Emmetropia: Journal of Cataract, Refractive and Corneal Surgery, 4(4), 191-196.
- Wu, W., Wang, Y., Zhang, H., Zhang, J., Li, H., & Dou, R. (2016). One-year visual outcome of small incision lenticule extraction (SMILE) surgery in high myopic eyes: retrospective cohort study. BMJ open, 6(9), e010993.
- Yang, W., Liu, S., Li, M., Shen, Y., & Zhou, X. (2020). Visual outcomes after small incision lenticule extraction and femtosecond laser-assisted LASIK for high myopia. Ophthalmic Research, 63(4), 427-433.
How to Cite
Kaushal Kishor Sahu, Sachitanand Singh and Renu Thakur. Visumax Femtosecond Laser Impact on Myopic Residual Refractive Error.
J. Multidiscip. Res. Healthcare. 2021, 08, 17-20