RaPiD: a Raspberry Pi-based optical fundoscope

A fundus camera is one of the most widely used tools for retinal examination and is used for the diagnosis of several eye diseases. Most retinal fundus imaging devices operate within a laboratory environment. They are expensive and have limited reach in rural areas, particularly in developing countr...

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Bibliographic Details
Published in:ISSS journal of micro and smart systems 2022-11, Vol.11 (2), p.397-405
Main Authors: Gagan, J. H., Kumar, J. R. Harish, Seelamantula, Chandra Sekhar, Adiga, Chandrashekara S.
Format: Article
Language:English
Subjects:
Engineering
Nanotechnology and Microengineering
Original Article
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Summary:A fundus camera is one of the most widely used tools for retinal examination and is used for the diagnosis of several eye diseases. Most retinal fundus imaging devices operate within a laboratory environment. They are expensive and have limited reach in rural areas, particularly in developing countries. Making the fundus imaging devices low-cost, portable, and rugged would make access to eye care affordable. In this paper, we explain the development of a Raspberry Pi-based fundus imaging device equipped with an 8-megapixel sensor array and with a field of view of 45 ∘ . The device operates in the mydriatic mode, i.e., it requires the pupil to be dilated. One of the shortcomings of a low-cost fundus imaging prototype is the reflection of the light source on the condenser lens, which we overcome using an innovative arrangement of the polarizers.
ISSN:2509-7989
2509-7997
DOI:10.1007/s41683-022-00108-6