Intrastromal Corneal Ring for Ectasia After Refractive Surgery (Anel)

To evaluate the clinical outcomes of intrastromal corneal ring segment (ICRS) implantation to correct keratoconus on eyes with prior refractive surgery.

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Key information

Conditions

Ectasia Astigmatism Dilatation, Pathologic Eye Diseases Pathological Conditions, Anatomical Pathological Conditions, Signs and Symptoms Refractive Errors

Age range

19 year–48 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Instituto de Olhos de Goiânia

Goiânia, Goiás, 74120-050, Brazil

About this study

Forty-two eyes of 26 patients, 14 men and 12 women, with ectasia after refractive surgery were studied in a nonrandomized, retrospective, observational case series. Mean age at the time of ICRS implantation was 30,5 years.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Patients 19 to 48 years old
Keratoconus (ectasia) on eyes with prior refractive surgery

Exclusion criteria

Diabetes
Autoimmune diseases

Treatment and study plan

INTRASTROMAL CORNEAL RING SEGMENT

Procedure

Corneal tunnels were created by means of mechanical dissection in all eyes. Main outcome measures included UCVA, BCVA, refraction, keratometry and computerized analysis of corneal topography.

Primary outcomes

Intrastromal Corneal Ring Segment Implantation for Ectasia After Refractive Surgery

Time frame: Mean follow-up after ICRS implantation was 12 months (range, 09 to 22 months).

To evaluate the clinical outcomes of intrastromal corneal ring segment (ICRS) implantation to correct keratoconus on eyes with prior refractive surgery. Corneal tunnels were created by means of mechanical dissection in all eyes. Main outcome measures included UCVA, BCVA, refraction, keratometry and computerized analysis of corneal topography.

Sponsors and collaborators

Lead sponsor

Instituto de Olhos de Goiania

Other

Registry information

Official study title

Intrastromal Corneal Ring Segment Implantation for Ectasia After Refractive Surgery

Important dates

Study start: 2010
Primary completion: 2013
Study completion: 2013
First posted: Dec 11, 2013
Registry last updated: Dec 11, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed