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مقاله
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Abstract
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Title:
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Comparison of PRK surgery results with static cyclotorsion control) SCC( and corneal wavefront guided (CWG) method in myopic-astigmatic patients
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Author(s):
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Baradaran Rafii AR, MD; Moradi Shahrbabak S, MSc*; Ahmadi Ghesherbat V, MSc
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Presentation Type:
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Poster
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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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Shiva Moradi shahrbabak
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Affiliation :(optional)
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ophthalmic research center,shahid beheshti university of medical sciences,tehran, iran
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E mail:
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shiva_5564@yahoo.com
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Phone:
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02144068375
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Mobile:
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09128497420
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Purpose:
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The object of this study was to compare the refractive results and corneal higher-order aberrations changes in Photorefractive Keratectomy (PRK) between Static Cyclotorsion Contol (SCC) and corneal wavefront guided (CWG) method.
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Methods:
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myopic-astigmatic patients with at least 1.00D of astigmatism underwent PRK by SCHWIND machine, with either SCC or CWG method. Changes in visual acuity, refractive error, ORBSCAN and corneal aberrometry in a 6-month follow up were investigated and compared between two groups.
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Results:
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BCVA (best corrected visual acuity) preoperatively and UCVA (uncorrected visual acuity) postoperatively was 10/10 for all the eyes. Mean age was 29.96 years. Mean myopia was -4.47 diopters (D) ±1.85 (SD) preoperatively and 0.26±0.56 (D) postoperatively. CWG group showed more significant changes in corneal aberrations. Significant difference between two methods was found in quatrefoil (p=0.036) and 6th order quatrefoil (p=0.048) changes in 4mm pupil. Correlation between SCC and CWG was r=0.93 and r=0.708 respectively.
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Conclusion:
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Despite the more increase of HOAs in CWG group; there were not considerable differences detected between 2 groups after PRK. SCC method with less corneal thickness reduction and less corneal HOAs changes has a more straight effect on correcting the refractive error.
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Attachment:
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424142x60_Horizontal_Templatev12.pptx
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