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مقاله
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Abstract
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Title:
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Stereo-acuity Changes after Trans-epithelial Photorefractive Keratectomy in Anisometropia
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Author(s):
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Hamidreza Hasani, MD
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Presentation Type:
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Poster
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Subject:
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Cornea & lens
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Others:
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Presenting Author:
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Name:
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Hamidreza Hasani
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Affiliation :(optional)
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Eye Research center, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
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E mail:
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hamidrezahasani@yahoo.com
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Phone:
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02188438227
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Mobile:
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09121759054
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Purpose:
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To determine the changes of setreoacuity after trans-epithelial photorefractive keratectomy (T-PRK) procedure in anisometropic myopic eyes.
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Methods:
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In this quasi-experimental study performed on myopic patients with at least 1 D of anisometropia who underwent T-PRK with mitomycin-C (MMC) for treatment of myopia using Amaris 500-Hz excimer laser (SCHWIND eye-tech solutions GmbH, Germany). Stereoacuity changes measured by TNO and butterfly stereoacuity test before T-PRK and 1, 3 and 6 months postoperatively.
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Results:
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108 eyes of 54 patients (44.4% male and 55.6% female) with mean age of 26+/- 4 years and mean myopia of -4.24+/-1.22 D and mean astigmatism of 1.1+/- 0.75 D were enrolled. The preoperative mean stereoacuity values 99+/- 5.44 sec/arc and 52.6+/-3.5 sec/arc by TNO and Butterfly Stereoacuity test changed to 85+/-4.56 sec/arc (P<0.05), and 46.5+/-1.3 sec/arc (P<0.05) respectively at 6 months after T-PRK. Total proportion of improvement in stereoacuity values was 14.1% and 11.5% by TNO and Butterfly Stereoacuity tests respectively.
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Conclusion:
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Stereoacuity improves after T-PRK in anisometropic myopic patients. TNO test can detect this improvement better than Butterfly test.
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Attachment:
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93stereo-acuity-portrait.pptx
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