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مقاله
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Abstract
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Title:
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Evaluation of Changes inVisual Acuity, Contrast Sensitivity, and Aberrations in Patients with Keratoconus after Corneal Collagen Cross-Linking
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Author(s):
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Amir Hossein Vejdani, Siamak Zarei Ghanavati, Hamid Khakshour
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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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Amir Hossein Vejdani
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Affiliation :(optional)
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Eye Research Center, Mashhad University of Medical Sciences
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E mail:
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amirhosein_vejdani@yahoo.com
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Phone:
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Mobile:
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09151105411
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Purpose:
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To assess and compare preoperative refractive, aberrometric, topographic, and contrast sensitivity (CS) measurements with postoperative values after corneal collagen cross-linking (CXL) in patients with progressive keratoconus.
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Methods:
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Twenty-two eyes of 11 patients with keratoconus were enrolled in this prospective study. Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA),CS (CS), and higher-order aberrations (HOAs) were evaluated at baseline and 1, 3, 6, and 8 months after surgery.
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Results:
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The mean total HOAs of the included patients were 2.24, 2.34, 2.28, 2.17, and 2.03 ?m before and 1, 3, 6, and 8 months after CXL, respectively. A significant reduction in corneal HOAs including vertical coma, vertical and horizontal trefoil and spherical aberration was observed 6 and 8 months after CXL. UCVA and BSCVA improved significantly in all patients who completed the follow-up period (P = 0.001). Although mean CS declined significantly 1 month postoperatively, it improved significantly after 3, 6, and 8 months (P = 0.00001). Maximum keratometry was significantly lower 8 months postoperatively compared to the preoperative value. (P = 0.006).
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Conclusion:
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CXL seems to improve UCVA, BSCVA, and CS and reduce most corneal HOAs in progressive forms of keratoconus.
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Attachment:
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