Wide field of view retinal imaging by handheld fundus camera

Diego Palacios, Kai Shen, Sarfaraz Baig, James H. Wang, Michael Renxun Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


We report that a large field of view (FOV) retinal image can be acquired by a low-cost smart fundus camera. This handheld system includes a Raspberry Pi board, a touch screen display, a customized optical lens group, a ring LED light, and a Li-battery. Based on the open hardware platform and Linux operating system, we have integrated the portable system with component switching and image processing functions. Wide FOV has been realized using image stitching and structure from motion algorithms. This customized low-cost handheld fundus camera provides better image quality than cellphone-based fundus imaging solutions and offers more operational features than traditional portable fundus cameras. It may benefit field portable ophthalmic diagnostic applications.

Original languageEnglish (US)
Title of host publicationOphthalmic Technologies XXIX
EditorsPer G. Soderberg, Fabrice Manns, Arthur Ho
ISBN (Electronic)9781510623583
StatePublished - Jan 1 2019
Event29th Conference on Ophthalmic Technologies - San Francisco, United States
Duration: Feb 2 2019Feb 3 2019

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


Conference29th Conference on Ophthalmic Technologies
Country/TerritoryUnited States
CitySan Francisco


  • Fundus Camera
  • Image Stitching
  • Raspberry Pi
  • Retinal Imaging
  • Wide Field of View

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


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