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مقاله
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Abstract
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Title:
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Higher -Order Aberrations changes after Customized Femtolaser assisted LASIK versus Laser Assisted Subepithelial Keratectomy for the Correction of High Myopia and Astigmatism
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Author(s):
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Seyed javad Hashemian, Mohammad Ebrahim Jafari
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Presentation Type:
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Oral
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Subject:
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Cornea and Anterior Segment
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Others:
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Presenting Author:
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Name:
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Seyed javad Hashemian
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Affiliation :(optional)
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Eye Research Center, Rassoul Akram Hospital, Tehran University of Medical Sciences, Tehran, IRAN
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E mail:
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sj_hashemian@yahoo.com
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Phone:
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22583455
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Mobile:
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09121142168
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Purpose:
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Tocompare the higher-order aberrations(HOAs)changes after Wavefront guided(WF-G) FA-LASIK versus WF-G LASEK in the treatment of high myopia and astigmatism.
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Methods:
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A prospective comparative case series study comprised 114 eyes of patients with spherical component greater than -6.00 diopters(D) and cylinder lower than -3.00D were assigned to 2 groups: 47 eyes were treated with FA-LASIK and 67 eyes with LASEK. Total RMS and HOAs value changes, Vertical and horizontal coma and spherical aberration were measured for each patient using a Shack-Hartmann wave- front sensorover a 6-mm pupil preoperatively and 6 months postoperation.
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Results:
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Preoperatively the mean refractive spherical equivalent(MRSE) was -7.12±1.47D in FA-LASIK group and -6.97±0.96 D in LASEK group, at 6 months it was -.27±.41and -.05±.51 respectively. At 6 months, there were no any statistically significant differences in term of UCVA P=.13, DCVA P=.65, Total RMS value P=.29.The mean Total HO-RMS value at 6 mm pupil were .360m in LASIK and .361m in LASEK group that increased to .614m and .711m respectively P=0.05.Vertical coma P=.005 and Spherical aberration p=.000 were increased significantly in LASEK group.
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Conclusion:
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Both customized WF-G FA-LASIK and LASEK were safe and effectively treated eyes with high myopia and astigmatism. HOAs value increased significantly more in LASEK group
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Attachment:
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