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Patients with KCN who undergo cornea transplantation divided to 2 groups:
Group1: After mechanical trephination, horizontal meridian of donor's cornea sutured to horizontal meridian of recipient cornea Group 2: After mechanical trephination, horizontal meridian of donor's cornea sutured to vertical meridian of recipient cornea After suture removal, best corrected visual acuity, refractive error, corneal keratometry, irregularity of corneal surface and high order aberration of two groups will compare
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| horizontal meridian of donor's cornea sutured to horizontal | Active Comparator | horizontal meridian of donor's cornea sutured to horizontal meridian of recipient cornea |
|
| horizontal meridian of donor's cornea sutured to vertical | Active Comparator | horizontal meridian of donor's cornea sutured to vertical meridian of recipient cornea |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| After mechanical trephination, horizontal meridian of donor's cornea sutured to horizontal meridian of recipient cornea | Procedure | After mechanical trephination, horizontal meridian of donor's cornea sutured to horizontal meridian of recipient cornea |
| Measure | Description | Time Frame |
|---|---|---|
| Best corrected visual acuity | Snellen chart | 14 months |
| graft astigmatism | Topography | 14 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Sepehr Feizi, MD | Contact | 009822591616 | labbafi@hotmail.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ophthalmic Research Center | Recruiting | Tehran | Iran |
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| : After mechanical trephination, horizontal meridian of donor's cornea sutured to vertical meridian of recipient cornea | Procedure | : After mechanical trephination, horizontal meridian of donor's cornea sutured to vertical meridian of recipient cornea |
|
| ID | Term |
|---|---|
| D007640 | Keratoconus |
| ID | Term |
|---|---|
| D003316 | Corneal Diseases |
| D005128 | Eye Diseases |
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