This study is not yet accepting patients

INTACS (Intrastromal Corneal Ring Segments) For Corneal Ectasia

Eligibility: for people ages 21 years and up (full criteria)
Healthy Volunteers: healthy people welcome
Dates: study started December 2025
completion around June 2029
Principal Investigator: by Christopher Heichel, MD (ucsd)

Description

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.

Details

Use of asymmetrical corneal inserts to reduce or eliminate myopia and astigmatism in patients with keratoconus, who are no longer able to achieve adequate vision with their contact lenses or spectacles, so that their functional vision may be restored and the need for corneal transplantation may potentially be deferred.

Keywords

Keratoconus, INTACS

Eligibility

You can join if…

Open to people ages 21 years and up

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

You CAN'T join if...

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

Lead Scientist at University of California Health

Christopher Heichel, MD (ucsd)
Clinical Professor, Ophthalmology, Vc-health Sciences-schools. Authored (or co-authored) 14 research publications

Details

Status: not yet accepting patients
Start Date: December 2025
Completion Date: June 2029 (estimated)
Sponsor: University of California, San Diego
ID: NCT02512432
Study Type: Interventional
Participants: Expecting 1000 study participants
Last Updated: May 2024