INTACS (Intrastromal Corneal Ring Segments) For Corneal Ectasia (NCT02512432) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
INTACS (Intrastromal Corneal Ring Segments) For Corneal Ectasia
1,000 participantsStarted 2025-12
Plain-language summary
To join established study put on by Addition Technologies, Inc. in the surgical implantation of asymmetrical INTACS segments to treat myopia and astigmatism in patients with keratoconus.
Who can participate
Age range
21 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* 21 years of age, or older
* have experienced a progressive deterioration in their vision, such that they can no longer achieve adequate functional vision on a daily basis with contact lenses, or spectacles.
* have clear central corneas
* have a corneal thickness of 450 microns or greater at the proposed incision site
* have corneal transplantation as the only remaining option to improve their visual function
Exclusion Criteria:
* under 21 years of age
* have not experienced a progressive deterioration in their vision, such that they can no longer achieve adequate functional vision on a daily basis with contact lenses, or spectacles.
* do not have clear central corneas
* do not have a corneal thickness of 450 microns or greater at the proposed incision site
* do not have corneal transplantation as the only remaining option to improve their visual function
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Corneal mapping to measure corneal thickness and steepening