keratoconus. other disorders of cornea
Conditions
Interventions
Intervention 1: Thirty eyes of thirty patients were into trial group . In trial group will use fullring with simultaneous cross-linking.In this group using femtosecond laser,pocket in the corneal str
Treatment - Surgery
Thirty eyes of thirty patients were into trial group . In trial group will use fullring with simultaneous cross-linking.In this group using femtosecond laser,pocket in the corneal stroma at a depth o
Thirty eyes of thirty patients were in to control group. In the control group will use the only fullring.In this group using femtosecond laser,pocket in the corneal stroma at a depth of 300 microns an
Sponsors
Vice chancellor for research, Tehran University of Medical Science
Eligibility
Sex/Gender
All
Age
73 Years to 59 Years
Inclusion criteria
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
Exclusion criteria:
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 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. | — |
Countries
Iran (Islamic Republic of)
Contacts
Public Contactmehrdad mohammadpour
Tehran university of medical sciences
Outcome results
None listed