Researcher: Özhan, Faik Ozan
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Özhan, Faik Ozan
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Publication Metadata only Dynamic accommodation measurement using Purkinje reflections and ML algorithms(SPIE-Int Soc Optical Engineering, 2023) ; Department of Electrical and Electronics Engineering; Department of Electrical and Electronics Engineering; Özhan, Faik Ozan; Gülersoy, Arda; Aygün, Uğur; Şahin, Afsun; Ürey, Hakan; ; Graduate School of Sciences and Engineering; School of Medicine; College of Engineering;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.