Wide field of view handheld smart fundus camera for telemedicine applications

Diego R. Palacios, Kai Shen, Sarfaraz Baig, James H. Wang, Chang Zhang, Dunhan Chen, Michael R. Wang

Research output: Contribution to journalArticlepeer-review


Purpose: We report that a large field-of-view (FOV) retinal image can be acquired by a smart fundus camera. Approach: This handheld system consists of a Raspberry Pi board, a touch screen display, a customized optical lens group, a ring light-emitting diode, and a Li-battery. Results: Wide FOV of 1/457 deg is observed with proper lens configuration and can be expanded using image stitching algorithms. Conclusions: This customized 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)
Article number026001
JournalJournal of Medical Imaging
Issue number2
StatePublished - Mar 1 2021
Externally publishedYes


  • Raspberry Pi
  • fundus camera
  • image stitching
  • retinal imaging
  • telemedicine

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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