Topography-Guided Customized PRK Versus Q-value Adjusted PRK in Correction of Myopia With or Without Astigmatism
NCT ID: NCT03291873
Last Updated: 2020-07-07
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
104 participants
INTERVENTIONAL
2017-10-25
2019-06-25
Brief Summary
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topography-guided ablation in one eye (group I) and Q-factor customized ablation in the other eye (group II).
Alcon/Wavelight Light Laser Technolo¬gie (GmbH, Erlangen, Germany) will be used for photoablation.
The wavelight Topolyzer (Wavelight AG, Erlan¬gen, Germany)and CSO Sirius scheimpflug camera combined with Placido corneal topography (CSO, Florence,Italy) will be used before and 1, 3 and 6 months after PRK. Refrac¬tive visual outcomes and corneal aberration changes will be compared between the two treatment modalities.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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topography guided PRK in one eye
Topography-guided (placido disk- based) using T-CAT Contoura treatment.
PRK
PRK using Alcon-Wavelight Excimer Laser EX 500
Q-value adjusted ( custom Q) PRK in the other eye
The target Q will be estimated according to a nomogram considering the patient's age
PRK
PRK using Alcon-Wavelight Excimer Laser EX 500
Interventions
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PRK
PRK using Alcon-Wavelight Excimer Laser EX 500
Eligibility Criteria
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Inclusion Criteria
* Myopia with up to -6.5 D with or without astigmatism up to -4.75 D
Exclusion Criteria
* basement membrane disease
* history of recurrent corneal erosions
* Schirmer's test less than 5 mm
* established or forme fruste keratoconus
* macular or retinal disease
* current use of immunosuppressive therapy
* autoimmune disease
* pregnancy, and lactation
18 Years
ALL
No
Sponsors
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Kasr El Aini Hospital
OTHER
Responsible Party
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Rania Elsayed Gad
Assisstant lecturer Faculty of Medicine Helwan University
Locations
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Eyecare centre
Maadi, Cairo Governorate, Egypt
Dar Al Oyun hospital
Giza, , Egypt
Countries
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Other Identifiers
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900800700600500400300200100900
Identifier Type: -
Identifier Source: org_study_id
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