Corneal WFG Versus AF Trans PRK in Myopic Patients With High Corneal HOA
NCT ID: NCT03786861
Last Updated: 2018-12-26
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
33 participants
INTERVENTIONAL
2017-01-12
2017-12-31
Brief Summary
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Detailed Description
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Background: Corneal WFG and aberration free treatments have been proposed as methods to achieve better visual, refractive, and optical outcomes.
Methods: prospective case series was conducted in El-Hekma Eye-LASIK center, Menoufia governorate, Egypt during the period from January 2017 to December 2017. TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing either aberration free or corneal WFG patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany). Uncorrected distance visual acuity (UDVA), manifest and cycloplegic refractions, best spectacle corrected distance visual acuity (CDVA), thorough slit lamp examination and corneal topography were assessed and repeated six months postoperatively.
Conditions
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Keywords
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Study Design
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NON_RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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42 eyes in aberration free group
TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing aberration free in aberration free group provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany)
corneal WFG group
TransPRK using ESIRIS flying spot excimer laser system (SCHWIND AMARIS®500E, SCHWIND eye-tech-solutions, Kleinhostheim, Germany), with 500 Hz repetition rate for faster treatments and scanning spots and with smart pulse technology. Eye-tracking during laser ablation was achieved using a 1050 Hz infrared eye tracker centered on the pupil. Static cyclotorsion control (SCC) compensation was obtained for all patients in corneal WFG group.
aberration free group
TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing aberration free patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany)
24 eyes in corneal WFG group
TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing corneal WFG patterns in corneal WFG group provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany)
corneal WFG group
TransPRK using ESIRIS flying spot excimer laser system (SCHWIND AMARIS®500E, SCHWIND eye-tech-solutions, Kleinhostheim, Germany), with 500 Hz repetition rate for faster treatments and scanning spots and with smart pulse technology. Eye-tracking during laser ablation was achieved using a 1050 Hz infrared eye tracker centered on the pupil. Static cyclotorsion control (SCC) compensation was obtained for all patients in corneal WFG group.
aberration free group
TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing aberration free patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany)
Interventions
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corneal WFG group
TransPRK using ESIRIS flying spot excimer laser system (SCHWIND AMARIS®500E, SCHWIND eye-tech-solutions, Kleinhostheim, Germany), with 500 Hz repetition rate for faster treatments and scanning spots and with smart pulse technology. Eye-tracking during laser ablation was achieved using a 1050 Hz infrared eye tracker centered on the pupil. Static cyclotorsion control (SCC) compensation was obtained for all patients in corneal WFG group.
aberration free group
TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing aberration free patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany)
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* blepharitis,
* corneal disease,
* contact lens warpage,
* cataract,
* uveitis
* posterior segment anomalies involving the macula or optic nerve
* systemic conditions; diabetes mellitus, connective tissue disease, pregnancy or nursing. Also, any patient who had previous ocular surgery including keratorefractive surgery was excluded
21 Years
52 Years
ALL
Yes
Sponsors
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Menoufia University
OTHER
Responsible Party
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Amin Faisal Ellakwa
assistant professor
Other Identifiers
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Al Hekma Center
Identifier Type: -
Identifier Source: org_study_id