Fundus camera versus smartphone camera attachment: image quality analysis

Nicole Barritt; Mohana Kuppuswamy Parthasarathy; Ibrahim Faruq; John Zelek; Vasudevan Lakshminarayanan

doi:10.1117/12.2528965

30 August 2019 Fundus camera versus smartphone camera attachment: image quality analysis

Nicole Barritt, Mohana Kuppuswamy Parthasarathy, Ibrahim Faruq, John Zelek, Vasudevan Lakshminarayanan

Proceedings Volume 11104, Current Developments in Lens Design and Optical Engineering XX; 111040A (2019) https://doi.org/10.1117/12.2528965
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

Fundus cameras are the current clinical standard for capturing retinal images, which are used to diagnose a variety of sight-threatening conditions. Traditional fundus cameras are not easily transported, making them unsuitable for field use. In addition, traditional fundus cameras are expensive. Due to this, a variety of technologies have been developed such as the D-EYE Digital Ophthalmoscope (D-EYE Srl, Padova, Italy) which is compatible with various cellphone cameras. This paper reports on the comparison of the image quality of the Nidek RS-330 OCT Retina Scan Duo (Nidek, Tokyo, Japan) and the D-EYE paired with an iPhone 6 (Apple, Cupertino, USA). Twenty-one participants were enrolled in the study of whom 14 underwent nonmydriatic and mydriatic imaging with the D-EYE and the Nidek. Seven participants underwent nonmydriatic imaging with the D-EYE and the Nidek. The images were co-registered and cropped so that the region of interest was equal in both the D-EYE and Nidek images, as the D-EYE had a smaller field of view. Using the Nidek image as the reference, objective full-reference image quality analysis was performed. Metrics such as structural similarity index and peak signal noise ratio were obtained. It was found that the image quality of the D-EYE is limited by the attached iPhone camera, and is lower when compared to the Nidek. Quantification of the differences between the D-EYE and Nidek allows for targeted development of smartphone camera attachments that can help to bridge the current gap in image quality.

Conference Presentation

Citation Download Citation

Nicole Barritt, Mohana Kuppuswamy Parthasarathy, Ibrahim Faruq, John Zelek, and Vasudevan Lakshminarayanan "Fundus camera versus smartphone camera attachment: image quality analysis", Proc. SPIE 11104, Current Developments in Lens Design and Optical Engineering XX, 111040A (30 August 2019); https://doi.org/10.1117/12.2528965

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