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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UNKNOWN
PHASE2
23 participants
INTERVENTIONAL
2013-05-31
Brief Summary
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Most studies of these two types of ring implantation outcomes are retrospective case series. Thus, this Randomized Clinical Trial study was designed with the aim of Comparing visual and refractive outcomes and complications of insertion Myoring versus Keraring using Femtosecond laser. Keratoconus patients with compound myopic astigmatism who meet the inclusion criteria will randomly allocated to the Keraring and Myoring groups. Subsequently, the clinical outcomes of two groups will be compared at one,3 and 6 months after surgery.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
Study Groups
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Intrastromal corneal continuous ring (Myoring)
Intrastromal corneal continuous ring (Myoring) implantation
Intrastromal corneal ring segments (Keraring)
intrastromal corneal ring segments (Keraring) implantation
Interventions
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intrastromal corneal ring segments (Keraring) implantation
Intrastromal corneal continuous ring (Myoring) implantation
Eligibility Criteria
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Inclusion Criteria
* age between 20 to 40
* corneal thickness\> 380 microns
* mean keratometry between 44 to 60 D
* clear central cornea
* Patients should be discontinued their contact lenses for 3 weeks prior to the exams
* contact lenses in tolerance
* 20/200\<visual acuity \<20/30
Exclusion Criteria
* Breast-feeding
* History of glaucoma, cataract, vernal and atopic keratoconjunctivitis
* History of previous ophthalmologic surgery, keratorefractive surgery on the operative eye
* Dry eye
* Corneal stromal disorders
* History of herpetic keratitis
* Pellucid marginal degeneration
* Corneal grafts
* Retinal disorders
* Nystagmus and uncooperative disposition
* Neuro-ophthalmologic disorders
* Intraocular pressure \<10 mmHg or \>21 mmHg
* Patients with autoimmune, connective tissue disorders, diabetes and immunosuppressive drugs users
* Hyperopia
20 Years
40 Years
ALL
No
Sponsors
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Shahid Beheshti University of Medical Sciences
OTHER
Responsible Party
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Zahra Rabbani Khah
clinical professor ,ophthalmic research center
Locations
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Islamic Republic OF Iran
Tehran, , Iran
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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91138
Identifier Type: -
Identifier Source: org_study_id
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