Lens-Viewpoint Extraction Method for Personalized Progressive Addition Lens Fitting
Yating Yang1,2, Xiaoqin Chen3,4, Zhichao Deng1,2
1Institute of Optometry Science Research, Nankai University, Tianjin, China.
Purpose:
To validate the accuracy of a lens-viewpoint extraction method and demonstrate its feasibility for tracking users' visual behavior on progressive addition lenses (PALs). This aims to provide a quantifiable fitting solution for PAL wearers in the future.
Methods:
We evaluated a method using eye-tracking technology to extract the viewpoint on the lens, implemented with a self-made setup. Accuracy verification experiments were performed using a mechanical artificial eye, and a clinical test on 10 subjects was performed to assess the accuracy of the method and explored its feasibility.
Results:
The accuracy of the lens-viewpoint extraction method was verified to be 0.21 ± 0.06 mm and 0.30 ± 0.07 mm on the lens in the mechanical artificial eye experiment and clinical test, respectively. An exemplary analysis of user eye behavior on the lens was provided.
Conclusions:
These results demonstrate that the lens-viewpoint extraction method achieves high accuracy and is feasible for tracking users' personalized visual habits on the lens.
Translational Relevance:
The lens-viewpoint extraction method introduced in this study shows significant potential for providing a quantifiable solution to improve wearing comfort for the presbyopia population, holding important translational value in the field of precision optometry.
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