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Structural effects on custom, flexible iris prostheses passing through injector systems.

Serra E Tuzun¹, Michael E Snyder

¹From the Cincinnati Eye Institute, Cincinnati, Ohio (Tuzun, Snyder); University of Michigan, Ann Arbor, Michigan (Tuzun); Department of Ophthalmology, University of Cincinnati School of Medicine, Cincinnati, Ohio (Snyder).

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|April 21, 2023

Summary

This summary is machine-generated.

Seven intraocular lens injector systems can effectively implant fiber-free artificial irides. However, artificial irides with fiber meshwork should not be injected, and screw-type injectors offer better control than plunger types.

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Area of Science:

Ophthalmology
Biomaterials Science
Surgical Technology

Background:

Artificial irides are used in ophthalmology to restore visual function.
The implantation method for artificial irides is critical for successful outcomes.
Evaluating the compatibility of existing intraocular lens (IOL) injectors with novel prosthetic devices is essential.

Purpose of the Study:

To assess the suitability of seven commercial IOL injection systems for implanting custom, flexible artificial irides.
To evaluate the performance of these systems with artificial irides of varying sizes and designs (with or without fiber meshwork).

Main Methods:

Custom artificial irides, with and without fiber meshwork, were prepared at specific diameters (12.8 mm or 10 mm).
These prostheses were inserted through seven different IOL injector systems.
Ease of loading, injection difficulty, control during injection, and prosthetic distortion were systematically observed and recorded.

Main Results:

Fiber-free artificial irides were implanted without distortion through all tested injector systems.
Artificial irides with embedded fiber meshwork showed significant distortion after attempted injection.
While all systems delivered the prostheses, screw-type injectors demonstrated less effort and greater control compared to plunger-type injectors.

Conclusions:

All seven IOL injection systems are suitable for implanting fiber-free artificial irides, with careful attention to insertion control.
Screw-type injectors provide superior control and require less effort than plunger-type injectors.
Artificial irides containing fiber meshwork should not be implanted using current IOL injector systems due to significant distortion.