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Meeting Abstract  |   April 2014

Peek: Portable Eye Examination Kit. TheSmartphone Ophthalmoscopeiain livingstone; Andrew Bastawrous; Mario E Giardini; Stewart Jordan; Peek Collaboration

Author Affiliations & Notes

Investigative Ophthalmology & Visual Science April 2014, Vol.55, 1612. doi:

AbstractPurposeCreate hardware and software solutions allowing the smartphone to be used to visualise

the retina.

MethodsThe target device under investigation is the Samsung Galaxy S3 (Samsung Group).

Accompanying software was designed for the android platform to automate such features

as optic cup:disc ratio calculation, with a view to aiding diagnosis of glaucomatous optic

neuropathy. An adaptor clip was designed with Rhinoceros 3D (McNeel and Associates),

and manufactured in PolyLactic Acid (PLA) by Fused Filament Fabrication using an Up! Plus

3D printer (PP3DP, China). The optics blanks were cut on a CTR E5 (CTR Lasers, UK) laser

cutter and polished by hand using diamond lapping compound, to create a miniature

prismatic solution re-routing light from the native 因ash to become coincident with the

optical path.

ResultsPeek provides high-resolution images of the retina su坴cient for clinical examination, with a

greater 囈eld than conventional direct ophthalmoscopy. Images obtained with Peek, along

with comparative images using conventional disc photography are demonstrated in Figure

1. The relative di垴erences in 囈eld between Peek and other ophthalmoscopic modalities are

demonstrated in Figure 2.

Conclusions

  

  

  

ConclusionsPeek is a low-cost alternative to the direct ophthalmoscope, comprising a smartphone

adaptor that circumvents many of the technically challenging aspects of fundoscopy. The

technology takes advantage of the intrinsic auto-focussing features within the smartphone

to provide a high-resolution view of the retina through an undilated pupil. The adaptor

couples the native mobile LED 因ash to optical path of the camera, allowing clinicians access

to a previously unobtainable view of the retina using a smartphone. The connectivity of

smartphone devices adds capacity to transmit retinal 囈ndings to secondary care for more

e垴ective triage in cases of diagnostic doubt. This low-cost technology has been designed

with a view to improving access to ophthalmic diagnostics in resource-poor settings. Trials

are underway to assess the impact of the technology in the diagnosis of glaucomatous

optic neuropathy in a related cluster randomised controlled trial based in Kenya.

View Original Download Slide

  

 

A:Peek smartphone-based retinal imaging B: Clinical standard photograph with NHS GG&C

Medical Illustration Topcon TRC-50EX mydriatic camera C: Peek adaptor in use during field

study

View Original Download Slide

Figure 2. Features of Peek, in context of traditional equivalent means of ophthalmoscopy

 

Keywords: 550 imaging/image analysis: clinical • 688 retina • 627 optic disc  

© 2014, The Association for Research in Vision and Ophthalmology, Inc., all rightsreserved. Permission to republish any abstract or part of an abstract in any form must

be obtained in writing from the ARVO Office prior to publication.