keratocunos. keratocunos
Conditions
Interventions
clinical trial study, The design of this study is cross over,two biomechanical factors such as Corneal Hysteresis (CH) ? Corneal Resistance Factor (CRF) assess after placement of keraring intra stroma
Treatment - Surgery
Sponsors
Tabriz University of Medica lSciences(chancellor for research
Eligibility
Sex/Gender
All
Age
21 Years to 40 Years
Inclusion criteria
Inclusion criteria: Inclusion criteria: 1-patient satisfaction 2-Progressive deterioration of vision so that the patient dose not necessary visual function with contact lenses or glasses for the daily work 3-patient with clear central cornea 4-cornea thickness equal or more than 450 micrometer in 5 sites incision 5-absent of local or diffuse autoimmune disease exclusion criteria: 1-post refractive surgery ectasia 2-previous corneal transplantation 3- corneal opacity 4- cornea thickness lesser than 450 micrometer in 5 sites incision 5- local or diffuse autoimmune disease
Exclusion criteria
Exclusion criteria:
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Corneal Hysteresis (CH) ? Corneal Resistance Factor (CRF). Timepoint: preoperation,1&6 month post operation. Method of measurement: Ocular Response Analyzer (ORA). | — |
Secondary
| Measure | Time frame |
|---|---|
| Visual acuity. Timepoint: preoperation,1&6 month post operation. Method of measurement: snellen chart. | — |
Countries
Iran (Islamic Republic of)
Contacts
Public Contactdr mohammad vashagh
Tabriz University of Medical Sciences
Outcome results
None listed