Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-24 @ 10:40 PM
Ignite Modification Date:
2025-12-24 @ 10:40 PM
NCT ID:
NCT03671135
Brief Summary:
The objective of this clinical study is to evaluate the safety and effectiveness of intrastromal implantation of the Allotex TransForm corneal allograft (TCA) for improving near vision in presbyopic subjects.
Detailed Description:
Beginning in 1949 with the pioneering work of Jose Barraquer, there has been an interest in using natural corneal tissue to change the refractive properties of the eye. In recent years, non-allogenic, synthetic corneal implants have received marketing approval in the United Stated and Europe for refractive purposes. Although synthetic implants are made of biocompatible materials they are not equivalent to an allogenic implant in terms of biocompatibility. The Allotex TCA is a piece of acellular cornea, sterilized with electron beam radiation and shaped to a particular shape using a laser. The availability of precise laser shaping systems and sterile corneas are the key factors that make the use of allogenic implants possible.
The TCA is placed in an intrastromal flap (Just beneath Bowmans layer) created using a femtosecond laser. The goal is to enhance the visual performance of the patient with a material that is 100% biocompatible and precisely shaped for the individual's needs.
Subjects must be presbyopic adults, needing from +1.75 D to +3.50 D of reading add in the non-dominant eye and must have uncorrected near visual acuity worse than 20/40 in the non-dominant eye. Bilateral treatments will not be allowed during this study.
Study:
NCT03671135
Study Brief:
Protocol Section:
NCT03671135