Dynamic accommodation measurement using Purkinje reflections and ML algorithms

Faik Ozan Ozhan; Arda Gulersoy; Ugur Aygun; Afsun Sahin; Hakan Urey

doi:10.1117/12.2651657

14 March 2023 Dynamic accommodation measurement using Purkinje reflections and ML algorithms

Faik Ozan Ozhan, Arda Gulersoy, Ugur Aygun, Afsun Sahin, Hakan Urey

Proceedings Volume 12360, Ophthalmic Technologies XXXIII; 123600Q (2023) https://doi.org/10.1117/12.2651657
Event: SPIE BiOS, 2023, San Francisco, California, United States

Conference Poster

Abstract

We developed a prototype device for dynamic gaze and accommodation measurements based on 4 Purkinje reflections (PR) suitable for use in AR and ophthalmology applications. PR1&2 and PR3&4 are used for accurate gaze and accommodation measurements, respectively. Our eye-model was developed in Zemax and matches the experiments well. Our model predicts the accommodation from 25cm to infinity (<4 diopters) with better than 0,25D accuracy. We performed repeatability tests and obtained accurate gaze and accommodation estimations using 15 subjects. We are generating a large synthetic data set using physically accurate models and machine learning algorithms.

Citation Download Citation

Faik Ozan Ozhan, Arda Gulersoy, Ugur Aygun, Afsun Sahin, and Hakan Urey "Dynamic accommodation measurement using Purkinje reflections and ML algorithms", Proc. SPIE 12360, Ophthalmic Technologies XXXIII, 123600Q (14 March 2023); https://doi.org/10.1117/12.2651657

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