Optical design of a compact image acquisition device for mobile diabetic retinopathy screening

David Melo, João Costa, Filipe Soares, Pedro Vieira

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

Imaging the eye retina is critical to diagnose various pathologies, particularly Diabetic Retinopathy, which is the leading cause of avoidable blindness in the world. Accessing the retina can be achieved through ophthalmoscopes with small field-of-view or Optical Coherence Tomography and fundus cameras, which are larger and expensive. The image acquisition through tabletop fundus cameras is the preferred method for retinopathy screening. However, these devices tend to be cumbersome and require expertise for operation, limiting its broad application. In this paper, a compact optical system was designed for a handheld and smartphone-based fundus camera prototype called EyeFundusScope, with the main goal of low-cost and high coverage screening. The key features for the compact optical system are the mobile and non-mydriatic acquisition of fundus images by a smartphone camera, with high field-of-view. The simplicity of the optical system was accomplished by a three lens system setup, simulated using ray tracing software. The results reveal a system with only a few aberrations in the periphery but with a good resolution at the center of 41 field-of-view. Besides the optical system, a mechanical prototype was designed with the purpose of being 3D printed and easily portable.

Original languageEnglish
Title of host publicationBIODEVICES 2018 - 11th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018
EditorsSergi Bermudez i Badia, Alberto Cliquet, Alberto Cliquet, Hugo Gamboa, Ana Fred
PublisherSciTePress
Pages63-70
Number of pages8
Volume1
ISBN (Electronic)9789897582776
Publication statusPublished - 1 Jan 2018
Event11th International Conference on Biomedical Electronics and Devices, BIODEVICES 2018 - Part of 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018 - Funchal, Madeira, Portugal
Duration: 19 Jan 201821 Jan 2018

Conference

Conference11th International Conference on Biomedical Electronics and Devices, BIODEVICES 2018 - Part of 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018
CountryPortugal
CityFunchal, Madeira
Period19/01/1821/01/18

Keywords

  • Diabetic Retinopathy
  • Fundus Camera
  • Mechanical Prototyping
  • Optical System Design

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