Incisional Correction of Corneal Astigmatism During Phacoemulsification
NCT ID: NCT04418986
Last Updated: 2020-06-05
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
PHASE4
40 participants
INTERVENTIONAL
2019-07-01
2019-09-30
Brief Summary
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It is possible to reduce pre-existing corneal astigmatism by creating a clear corneal incision at the steep meridian of the cornea, however; creating a small incision can correct the only astigmatism up to 1 Diopter, and sometimes this method may not be easy to perform due to the location of steep meridian like the difficulty while creating a superonasal or inferonasal incision at the left eye. This approach is usually sufficient for correcting astigmatism less than 1 D in most eyes. An opposite side clear corneal incision (OCCI) could enhance the flattening effect on the cornea.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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Control (CCI Group)
The Participants will undergo phacoemulsification with on-axis incision
opposite clear corneal incisions (OCCI)
Coaxial small incision cataract surgery was performed for all cases using a 2.8 mm keratome placed at steep meridian and 1-mm paracentesis was made 90 degrees apart with a 20-gauge microvitrectomy blade. Surgery was performed with a 30-degree, 0.9-caliper phacoemulsification tip (microtip) with a divide and conquer technique.
In the OCCI group, a single penetrating incision was created with 2.8 mm keratome in the clear cornea, 1.5 mm anterior to limbal blood vessels, centered over the steep meridian and opposite the phacoemulsification incision.
Study (OCCI Group)
The Participants will undergo phacoemulsification with opposite clear corneal incisions
opposite clear corneal incisions (OCCI)
Coaxial small incision cataract surgery was performed for all cases using a 2.8 mm keratome placed at steep meridian and 1-mm paracentesis was made 90 degrees apart with a 20-gauge microvitrectomy blade. Surgery was performed with a 30-degree, 0.9-caliper phacoemulsification tip (microtip) with a divide and conquer technique.
In the OCCI group, a single penetrating incision was created with 2.8 mm keratome in the clear cornea, 1.5 mm anterior to limbal blood vessels, centered over the steep meridian and opposite the phacoemulsification incision.
Interventions
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opposite clear corneal incisions (OCCI)
Coaxial small incision cataract surgery was performed for all cases using a 2.8 mm keratome placed at steep meridian and 1-mm paracentesis was made 90 degrees apart with a 20-gauge microvitrectomy blade. Surgery was performed with a 30-degree, 0.9-caliper phacoemulsification tip (microtip) with a divide and conquer technique.
In the OCCI group, a single penetrating incision was created with 2.8 mm keratome in the clear cornea, 1.5 mm anterior to limbal blood vessels, centered over the steep meridian and opposite the phacoemulsification incision.
Eligibility Criteria
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Inclusion Criteria
* No history of previous ocular surgery
* Central corneal thickness (CCT) \<640
Exclusion Criteria
* Corneal opacities or pathology like Fuch's endothelial dystrophy
* Previous ocular surgeries like glaucoma surgery or PKP or pterygium excision
* Posterior segment diseases and pathology
* Complicated phacoemulsification
ALL
No
Sponsors
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Baghdad Medical City
OTHER
Al-Rasheed University College
OTHER
Responsible Party
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Locations
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Ghazi al-Hariri Surgical Specialties Hospital
Baghdad, Bab-Almuadham, Iraq
Countries
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Other Identifiers
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AR200105
Identifier Type: -
Identifier Source: org_study_id
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