CHANGES OF WAVEFRONT ABERRATIONS AFTER CONVENTIONAL LASIK FOR MYOPIA AND MYOPIC ASTIGMATISM

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MIRZAEI MOHAMMAD; MIRZAEI SAMIRA

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Journal Paper

Paper Information

Journal: MEDICAL JOURNAL OF TABRIZ UNIVERSITY OF MEDICAL SCIENCES Year:2011 | Volume:33 | Issue:1 Page(s): 0-0

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Title

CHANGES OF WAVEFRONT ABERRATIONS AFTER CONVENTIONAL LASIK FOR MYOPIA AND MYOPIC ASTIGMATISM

Author(s)

MIRZAEI MOHAMMAD | MIRZAEI SAMIRA | Issue Writer Certificate

Keywords

REFRACTIVE SURGERY

LASIK

REFRACTIVE ERROR

WAVEFRONT ABERRATIONS

Abstract

Background and Objectives: Laser refractive surgeries such as LASIK are effective techniques to correct the REFRACTIVE ERRORs, but it increases the higher order aberrations and subsequently decreases visual quality. The aim of the present study was to evaluate changes of higher and lower order aberrations after LASIK in myopia and myopic astigmatism.Materials and Methods: In this cross-sectional survey 100 eyes from 50 patients with myopia and myopic astigmatism were evaluated. Complete eye examinations were performed and best corrected visual acuity was determined in all patients preoperatively. Furthermore, ultrasonic pachymetry and topography linked aberrometry was performed. Higher and lower order aberrations (HOAS, LOAS) were measured. Uncomplicated LASIK was performed with Schwind ESIRIS system and at least 3 months after LASIK all parameters were recontrolled.Results: Mean pre- and postoperative manifest refraction spherical equivalent (MRSE) was -4.78±2.01 D and -0.34±0.20 D (P<0.001). Mean pre-LASIK total aberrations were 5.66±2.24mm that decreased to 1.47±0.67mm postoperatively. Following operation, focus and astigmatism (LOAS) decreased from -21.41±8.02mm and 4.34±3.24mm to -2.78±2.10mm and 2.48±1.53mm, respectively (P<0.001). Mean preoperative HOAS was 0.27±0.11mm that increased to 0.48±0.30mm postoperatively (P<0.001). This increase was correlated with amount of SE correction.Conclusion: Conventional LASIK corrects myopia and myopic astigmatism and decreases total aberrations and LOAS, but increases HOAS that is positively correlated with the amount of attempted MRSE correction.

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APA: Copy

MIRZAEI, MOHAMMAD, & MIRZAEI, SAMIRA. (2011). CHANGES OF WAVEFRONT ABERRATIONS AFTER CONVENTIONAL LASIK FOR MYOPIA AND MYOPIC ASTIGMATISM. MEDICAL JOURNAL OF TABRIZ UNIVERSITY OF MEDICAL SCIENCES, 33(1), 0-0. SID. https://sid.ir/paper/567995/en

Vancouver: Copy

MIRZAEI MOHAMMAD, MIRZAEI SAMIRA. CHANGES OF WAVEFRONT ABERRATIONS AFTER CONVENTIONAL LASIK FOR MYOPIA AND MYOPIC ASTIGMATISM. MEDICAL JOURNAL OF TABRIZ UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2011;33(1):0-0. Available from: https://sid.ir/paper/567995/en

IEEE: Copy

MOHAMMAD MIRZAEI, and SAMIRA MIRZAEI, “CHANGES OF WAVEFRONT ABERRATIONS AFTER CONVENTIONAL LASIK FOR MYOPIA AND MYOPIC ASTIGMATISM,” MEDICAL JOURNAL OF TABRIZ UNIVERSITY OF MEDICAL SCIENCES, vol. 33, no. 1, pp. 0–0, 2011, [Online]. Available: https://sid.ir/paper/567995/en

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