Intrastromal Corneal Ring Segment Implantation in 219 Keratoconic Eyes at Different Stages

Fernandez-Vega Ophthalmological Institute

Status: Completed

Conditions: Keratoconus

Study type: Observational

Funder types: Other

Identifiers

NCT01261013

IOFV-1

Details and patient eligibility

About

The purpose of this study is to properly analyse the visual and refractive outcomes of implantation of KeraRing intrastromal corneal ring segment (ICRS) at the different stages of keratoconus.

Enrollment: 219 patients

Sex: All

Ages: 20 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients who had keratoconus
• Contact lens intolerance and clear cornea.
• The maximum keratometric reading was less than 60.00 diopters (D)
• The minimum corneal thickness more than 300 μm.

Exclusion criteria

• Acute or grade IV keratoconus.
• Previous corneal or intraocular surgery.
• Cataract, history of glaucoma or retinal detachment, macular degeneration or retinopathy, neuro-ophthalmic diseases, and history of ocular inflammation

Trial design

219 participants in 3 patient groups

keratoconus stage I in whom KeraRing ICRS were implanted

keratoconus stage II in whom KeraRing ICRS were implanted

keratoconus stage III in whom KeraRing ICRS were implanted