Article

Construction of an inexpensive, hand-held fundus camera through modification of a consumer "point & shoot" camera.

Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States.
Investigative ophthalmology & visual science (Impact Factor: 3.43). 10/2012; DOI: 10.1167/iovs.12-10449
Source: PubMed

ABSTRACT PURPOSE: To construct a low cost, easy-to-use, high image quality mydriatic fundus camera with "point & shoot" operation, and to evaluate the efficacy of this camera to accurately document retinal disease. Methods: A prototype portable fundus camera was designed by interfacing a novel optical module with a Panasonic Lumix G2 consumer camera. Low cost commercially available optics were used to create even illumination of the fundus, providing a 50° retinal field of view. A comparative study assessing the image quality of the prototype camera against a traditional tabletop fundus camera was conducted under an IRB-approved study. RESULTS: A stand-alone, mydriatic camera prototype was successfully developed at a parts cost of less than $1000. The prototype camera was capable of operating in a point-and-shoot manner with automated image focusing and exposure, and the image quality of fundus photos was comparable to existing commercial cameras. Pathology related to both non-proliferative and proliferative diabetic retinopathy and age-related macular degeneration was easily identified from fundus images obtained from the low cost camera. CONCLUSIONS: Early prototype development and clinical testing has shown that a consumer digital camera can be inexpensively modified to image the fundus with professional diagnostic quality. The combination of low cost, portability, "point & shoot" operation, and high image quality provides a foundational platform on which one can design an accessible fundus camera to screen for eye disease.

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    ABSTRACT: Digital fundus imaging is used extensively in the diagnosis, monitoring and management of many retinal diseases. Access to fundus photography is often limited by patient morbidity, high equipment cost and shortage of trained personnel. Advancements in telemedicine methods and the development of portable fundus cameras have increased the accessibility of retinal imaging, but most of these approaches rely on separate computers for viewing and transmission of fundus images. We describe a novel portable handheld smartphone-based retinal camera capable of capturing high-quality, wide field fundus images. The use of the mobile phone platform creates a fully embedded system capable of acquisition, storage and analysis of fundus images that can be directly transmitted from the phone via the wireless telecommunication system for remote evaluation.
    The British journal of ophthalmology 12/2013; · 2.92 Impact Factor

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