Long-Term Clinical and Functional Results of High-Grade Myopia Correction by Intrastromal Implantation of the MyoRing Ring with Femtolaser Support
https://doi.org/10.18008/1816-5095-2023-1-105-111
Abstract
Purpose: Analysis of remote clinical functional results of high myopia correction in patients with thin cornea by method of intrastromal MyoRing implantation with Femtolaser assistance.
Materials and methods. 22 eyes of 22 patients were included into investigation, the мean age of patients was 30.20 ± 5.37 (from 24 to 40) years. Mean spherical equivalent (SE) of refraction was –11.52 ± 1.96 D, cylindrical component of refraction was –2.04 ± 1.64 D. Minimal pachymetry index in center was 491.6 ± 20.0 mkm. Corneal hysteresis (CH) was 8.60 ± 1.19 mm Hg. The average pupil diameter in mesopic conditions was 5.60 ± 0.23 mm. All patients had a history of mild amblyopia. Period of control in average 2 years.
Results. In 2 years after the surgery uncorrected visual acuity was 0.60 ± 1.22, corrected visual acuity 0.70 ± 0.20. Mean spherical equivalent (SE) of refraction was 0.61 ± 1.43 D, cylindrical component of refraction was –0.13 ± 0.50 D. Predictability of SE within ±0.5 D was 84 %, ±1.0 — 84 %. Index of safety was 1.16, index of efficacy — 1.0. CH was 9.50 ± 0.03 mm Hg. Mean pachymetry at center after the surgery did not change statistically significant in comparison with initial data (p = 1.00).
Conclusion. MyoRing implantation is an effective and safe method, it provides: refraction spherical component correction, astigmatism correction and CH increase (p = 0.01).
About the Authors
I. L. Kulikova
Cheboksary branch of S. Fyodorov Eye Microsurgery Federal State Institution
Russian Federation
Russian Federation
Kulikova Irina L. - MD, professor, deputy director for clinical work
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation
A. E. Terent’eva
Cheboksary branch of S. Fyodorov Eye Microsurgery Federal State Institution
Russian Federation
Russian Federation
Terent’eva Anna E. - ophthalmologist
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation
M. V. Sinitsyn
Cheboksary branch of S. Fyodorov Eye Microsurgery Federal State Institution
Russian Federation
Russian Federation
Sinitsyn Maksim V. - PhD, ophthalmologist, head of the Children’s department
Tractorostroiteley ave., 10, Cheboksary, 428028, Russian Federation
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Review
For citations:
Kulikova I.L., Terent’eva A.E., Sinitsyn M.V. Long-Term Clinical and Functional Results of High-Grade Myopia Correction by Intrastromal Implantation of the MyoRing Ring with Femtolaser Support. Ophthalmology in Russia. 2023;20(1):105-111. (In Russ.) https://doi.org/10.18008/1816-5095-2023-1-105-111
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