Analysis of intrastromal corneal ring implants in irregular corneas at a reference center in Brazil
Not Applicable
- Conditions
- Pathological conditions, signs and symptoms.Congenital, hereditary, and neonatal diseases and abnormalities.Eye Diseases.Keratoconus.Astigmatisms.Ophthalmologic surgical procedures.C11.204.627C11.744.212E04.540
- Registration Number
- RBR-6s72rf
- Lead Sponsor
- niversidade Federal de São Paulo - Departamento de Oftalmologia
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Data analysis completed
- Sex
- Not specified
- Target Recruitment
- Not specified
Inclusion Criteria
All patients who underwent intrastromal corneal ring implantation between November 2009 and December 2012 in Sorocaba Ophthalmological Hospital.
Surgical technique exclusively manual or using fentosecond LASER assistance.
Patients whose implants used were Kerarings of 5mm diameter.
Exclusion Criteria
Incomplete medical records.
Incomplete ophthalmic preoperative evaluation or incomplete preoperative complementary exames (for example previous corneal topography or tomography and pachymetry).
Study & Design
- Study Type
- Observational
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Expected outcome: the implantation of intrastromal corneal ring is effective in improving visual acuity in patients with different corneal ectasia or irregular astigmatism.;Expected outcome: the implantation of intrastromal corneal ring reduces the refrative error in patients with different corneal ectasia or irregular astigmatism.
- Secondary Outcome Measures
Name Time Method Expected outcome: the implantation of intrastromal corneal ring decreases keratometric indices in patients with different corneal ectasia or irregular astigmatism.;Expected outcome: the implantation of intrastromal corneal ring is safe (complications related to the procedure) for patients with different corneal ectasia or irregular astigmatism.