Impact of fullring and cross-linking in treatment of keratoconus

Not Applicable

• Conditions: keratoconus.; other disorders of cornea

• Registration Number: IRCT2015030813567N9
• Lead Sponsor: Vice chancellor for research, Tehran University of Medical Science

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Last Update Posted: 22 February 2018

Recruitment & Eligibility

• Status: Complete
• Sex: All
• Target Recruitment: 60

Inclusion Criteria

The inclusion criteria: Older than 21 year and less than 35 year ; Glasses or hard contact lens intolerance ; mean keratometery less than 53 diopter ; Central corneal thickness more than 400 micron ; maximum myopia and astigmatism 10 diopter ; Best corrected visual acuity more than 4/10
The exclusion criteria: Central corneal scar ;History of any ocular surgery ;pregnancy and lactation ;History of herpetic keratitis ;History of cross-linking ;Patients with connective tissue diseases

Exclusion Criteria

Not provided

Study & Design

• Study Type: interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Visual acuity. Timepoint: Before intervention-one week,one month,three month and six month after intervention. Method of measurement: snellen chart.;Refractive error. Timepoint: Before intervention-one week,one month,three month and six month after intervention. Method of measurement: Retinoscopy.;Keratometery. Timepoint: Before intervention-one week,one month,three month and six month after intervention. Method of measurement: Pentacam.;Corneal high order aberration. Timepoint: Before intervention-one week,one month,three month and six month after intervention. Method of measurement: iTrace.;Depth position of the full ring in corneal stroma. Timepoint: Before intervention-one week,one month,three month and six month after intervention. Method of measurement: OCT Casia.;Corneal endothelial cell count. Timepoint: Before intervention-one week,one month,three month and six month after intervention. Method of measurement: Specular microscopy.