Study of tear meniscus height measurement for dry eye detection using smartphone camera and ring light

Kaito Okazaki; Makoto Hasegawa

doi:10.1117/12.2666509

25 March 2023 Study of tear meniscus height measurement for dry eye detection using smartphone camera and ring light

Kaito Okazaki, Makoto Hasegawa

Proceedings Volume 12592, International Workshop on Advanced Imaging Technology (IWAIT) 2023; 1259229 (2023) https://doi.org/10.1117/12.2666509
Event: International Workshop on Advanced Imaging Technology (IWAIT) 2023, 2023, Jeju, Korea, Republic of

Abstract

Meniscus height measurement for dry-eye syndrome detection using a smartphone and an LED ring light that is small, inexpensive, and portable. A circular image of the ring light is reflected at the center of the eye, and a distorted crescent-shaped image appears on the tear meniscus where the tears collect. The diameter of the reflected circle on the cornea and height of the crescent-shaped circle reflected on the meniscus are measured through image processing, which includes binarization, circle detection, and removal of unnecessary connected components. The variation in meniscus height caused by the difference in distance between the smartphone and the eye is divided by the diameter and normalized. We further present experimental results that demonstrate that our method is as effective as a system using medical equipment.

Citation Download Citation

Kaito Okazaki and Makoto Hasegawa "Study of tear meniscus height measurement for dry eye detection using smartphone camera and ring light", Proc. SPIE 12592, International Workshop on Advanced Imaging Technology (IWAIT) 2023, 1259229 (25 March 2023); https://doi.org/10.1117/12.2666509

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