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Related Experiment Videos

A Portable, Inexpensive, Nonmydriatic Fundus Camera Based on the Raspberry Pi® Computer.

Bailey Y Shen1, Shizuo Mukai2

  • 1Department of Ophthalmology, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 West Taylor Street, Chicago, IL 60612, USA.

Journal of Ophthalmology
|April 12, 2017
PubMed
Summary

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Researchers developed an affordable, pocket-sized nonmydriatic fundus camera using mobile technology. This portable device captures retinal images without pupil dilation, offering a cost-effective solution for eye care professionals.

Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Nonmydriatic fundus cameras enable retinal photography without pupil dilation.
  • Current devices are often bulky, non-portable, and costly.
  • Advances in mobile technology present opportunities for innovation.

Purpose of the Study:

  • To develop an affordable, portable nonmydriatic fundus camera.
  • To create a device that fits in a white coat pocket.
  • To leverage mobile technology for accessible retinal imaging.

Main Methods:

  • A prototype camera was constructed using a Raspberry Pi, infrared camera, LED, battery, touchscreen, and condensing lens.
  • The design is based on indirect ophthalmoscopy utilizing both infrared and white light.

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  • The camera was assembled from readily available components.

    • Main Results:

    • The prototype measures 133mm × 91mm × 45mm and weighs 386 grams.
    • The total component cost was $185.20.
    • The camera successfully acquired good-quality fundus images without pharmacologic pupil dilation.

    Conclusions:

    • An inexpensive, handheld, nonmydriatic fundus camera can be assembled from minimal components.
    • The prototype is functional and cost-effective.
    • Potential applications exist for healthcare professionals in various settings, especially where traditional equipment is impractical.