Intraestromal Corneal Ring in Mild Keratoconus
Not Applicable
Completed
- Conditions
- Eye DiseasesOphthalmological DisorderCorneaKeratoconus
- Registration Number
- NCT03127163
- Lead Sponsor
- University of Sao Paulo
- Brief Summary
To determine whether the implantation of an intrastromal corneal ring is an effective treatment for a homogeneous group of mild keratoconus patients.
- Detailed Description
A group of 65 patients with mild keratoconus were implanted with a Ferrara ring in a single eye. Six months after surgery, the aberrations were measured and the visual function was determined using clinical indices. The aberrations, especially comatic aberration (coma), were measured independently.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 65
Inclusion Criteria
- Investigators used the Amsler-Krumeich classification and included only patients classified as grade I or II.
Exclusion Criteria
- Investigators excluded patients with central corneal scarring, with other eye disorders, or with previous ocular surgery. We also excluded patients with a history of herpes infection, keratitis, corneal dystrophies, diagnoses of autoimmune diseases, systemic connective tissue disorders, or acute keratoconus.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Primary Outcome Measures
Name Time Method Aberrations were measured and the visual function was determined using clinical indices. 3 months after surgery Wave front data
- Secondary Outcome Measures
Name Time Method UCVA 3 months after surgery Uncorrected visual acuity
BCVA 3 months after surgery Best corrected visual acuity
Trial Locations
- Locations (1)
Hospital das Clínicas
🇧🇷Sao Paulo, SP, Brazil
Hospital das Clínicas🇧🇷Sao Paulo, SP, Brazil