In:
Science & Technology Development Journal - Health Sciences, Viet Nam National University Ho Chi Minh City, ( 2022)
Abstract:
Purpose: To evaluate the correlation between patient’s refractive status and changes in high-order aberration after small incision lenticule extraction in correcting myopia and myopic astigmatism. Methods: Prospective, longitudinal observational study. Sixty-six eyes from 33 myopia or myopic astigmatism patients were enrolled in this study. Patients uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), refractive status, central corneal thickness, corneal refractive power, optical zone, lenticule thickness and 3 higher-order aberration values in Zernike polynomial (spherical aberration, coma and total root mean square) were recorded before the surgery and at 3-month follow-up. Results: At 3-month follow-up, 100% of eyes achieved 20/20 uncorrected visual acuity. There were statistically significant increases of spherical aberration, coma and total root mean square after the surgery; with post-operation changes of spherical aberration, coma and total root mean square being 0,1689 ± 0,0867 µm, 0,1771 ± 0,0941 µm and 0,3271 ± 0,1035 µm, in order (p 〈 0,001). A linear correlation was found between pre-operation spherical equivalent with changes of spherical aberration (R = 0,449; p 〈 0,01) and total root mean square (R = 0,229; p = 0,05). Conclusion: Small incision lenticule extraction results in good visual outcome, however still induces increase of higher-order aberration, especially in patients with high refraction.
Type of Medium:
Online Resource
ISSN:
2734-9446
DOI:
10.32508/stdjhs.v3i1.503
Language:
Unknown
Publisher:
Viet Nam National University Ho Chi Minh City
Publication Date:
2022
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