June 2017
Volume 58, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2017
The MeyeSight App for Screening of Visual Acuity, Contrast Vision, and the Central Visual Field
Author Affiliations & Notes
  • Kimberly Tang
    California Pacific Medical Center, San Francisco, California, United States
  • Geraldine Rosaura Slean
    California Pacific Medical Center, San Francisco, California, United States
  • August Colenbrander
    Smith-Kettlewell Eye Research Institute, San Francisco, California, United States
    California Pacific Medical Center, San Francisco, California, United States
  • Footnotes
    Commercial Relationships   Kimberly Tang, None; Geraldine Slean, None; August Colenbrander, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2017, Vol.58, 3266. doi:
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    • Get Citation

      Kimberly Tang, Geraldine Rosaura Slean, August Colenbrander; The MeyeSight App for Screening of Visual Acuity, Contrast Vision, and the Central Visual Field. Invest. Ophthalmol. Vis. Sci. 2017;58(8):3266.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To evaluate the usability of the MeyeSight app, an interactive smartphone application to screen for defects of visual acuity, contrast vision, and the central visual field in healthy controls and visually impaired patients.

Methods : MeyeSight was piloted on visually impaired patients and healthy controls through convenience sampling. After their participation, subjects were engaged in semi-structured qualitative interviews to better understand their reactions and experience to the application.

Results : 46 visually impaired patients and 19 healthy controls participated. To avoid confusion with clinical visual acuity measurements, results were coded from A to Z in steps of 0.1 logMAR. In patients, median visual acuity score under high contrast was K (range E through Q) and under low contrast was M (range G through S), a 2-line difference. Healthy controls scored better with median visual acuity score under high contrast a C (range B to E) and under low contrast a D (range B to F), a 1-line difference. Median visual search time was 104.5 seconds (range 11-294) in the visually impaired, six times longer than the 17.3 seconds (range 9-33) in healthy controls. The majority of subjects (87% patients, 100% controls) found the application easy to use, and all (100%) would use the application at home and recommend it to friends and family.

Conclusions : MeyeSight is an easy-to-use smartphone application that can help the visually impaired, those at risk for eye disorders, or even healthy individuals monitor visual changes by measuring visual acuity, contrast vision, and visual fields.

This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.

 

Subjects are shown an arrow and respond by swiping in the indicated direction in the corner of the screen.

Subjects are shown an arrow and respond by swiping in the indicated direction in the corner of the screen.

 

Example of an actual result plot that can be saved. The left part shows retinal sensitivity around fixation. The uneven circles indicate uneven search times, which is abnormal. The right part shows responses at high and low contrast (A = smallest target, green = seen, red = missed, arrow = visual acuity). The 4-line difference is abnormal. Although this subject has normal high contrast acuity, contrast sensitivity and the central field are abnormal. He deserves a full eye examination.

Example of an actual result plot that can be saved. The left part shows retinal sensitivity around fixation. The uneven circles indicate uneven search times, which is abnormal. The right part shows responses at high and low contrast (A = smallest target, green = seen, red = missed, arrow = visual acuity). The 4-line difference is abnormal. Although this subject has normal high contrast acuity, contrast sensitivity and the central field are abnormal. He deserves a full eye examination.

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