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مقاله
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Abstract
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Title:
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Femtosecond laser versus mechanical intrastromal corneal ring segment implantation in keratoconus
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Author(s):
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Bahram Einollahi MD; Hamidreza Hasani MD
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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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Hamidreza Hasani
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Affiliation :(optional)
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Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences
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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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PURPOSE: To compare the outcomes of mechanical and femtosecond laser–assisted tunnel creation for intrastromal corneal ring segment (ICRS) implantation in eyes with keratoconus.
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Methods:
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In this prospective study, consecutive eyes with keratoconus were randomly assigned to have ICRS tunnel creation with a mechanical device or a femtosecond laser. Keraring ICRS with a 5.0 mm diameter and different arc length were implanted. The uncorrected (UDVA) and corrected (CDVA) distance visual acuities, refraction, and keratometry (K) readings were measured preoperatively and 3&6 months and then 1 year postoperatively, and the data in the mechanical group and the femtosecond group were compared statistically.
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Results:
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One year postoperatively, there was significant improvement in UDVA, CDVA, K readings, spherical equivalent (SE), and manifest sphere and cylinder in both groups (P<.05). The mean reduction in maximum keratometry was 6.38 diopters (D) and 7.04 D, respectively, and the mean reduction in SE, 4.17D and 5.47D, respectively. There were no statistically significant differences between the 2 groups in visual or refractive results (P>.05). Bacterial keratitis, superficial segment placement, and segment extrusion in 1 eye, and white sterile deposition in 5 eyes occurred in the mechanical group.
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Conclusion:
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Visual and refractive outcomes were similar to those in the femtosecond group.
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Attachment:
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