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Evaluation of a liquid membrane-based tunable lens and a solid-state LIDAR camera feedback system for presbyopia
Rajat Agarwala1, Olga Lukashova Sanz1,2, Immanuel P Seitz1,2
1Institute for Ophthalmic Research, University of Tuebingen, Elfriede-Aulhorn-Str. 7, Tuebingen, 72076, Germany.
Biomedical Optics Express
|February 3, 2023
Summary
Electronically tunable lenses show promise for correcting age-related presbyopia by restoring near focus. A novel LIDAR feedback system enables precise control for effective vision correction.
Area of Science:
- Ophthalmology
- Optics
- Biomedical Engineering
Background:
- Presbyopia is an age-related condition causing loss of near vision, typically affecting individuals over 40.
- Current corrective methods for presbyopia include reading glasses and multifocal contact lenses.
Purpose of the Study:
- To evaluate electronically tunable lenses for aberration properties and efficacy in presbyopia correction.
- To develop and test a feedback mechanism for tunable lens operation.
Main Methods:
- Assessment of tunable lenses' optical properties in healthy subjects under cycloplegia.
- Measurement of visual acuity and contrast sensitivity to determine corrective performance.
- Development of a feedback system using a portable solid-state LIDAR camera.
Main Results:
- Tunable lenses demonstrated suitable aberration properties for vision correction.
- Evaluation in subjects showed potential for presbyopia correction.
- A feedback mechanism with a processing time of 40±5 ms was successfully demonstrated.
Conclusions:
- Electronically tunable lenses are a feasible option for presbyopia correction.
- The developed LIDAR-based feedback system offers precise control for tunable lens operation.
- Further research may lead to advanced solutions for age-related vision impairment.
