TY - JOUR
T1 - Evaluation of Tablet-Based Tests of Visual Acuity and Contrast Sensitivity in Older Adults
AU - Varadaraj, Varshini
AU - Assi, Lama
AU - Gajwani, Prateek
AU - Wahl, Madison
AU - David, Jenina
AU - Swenor, Bonnielin K.
AU - Ehrlich, Joshua R.
N1 - Funding Information:
This work was supported by the National Institutes of Health under grant [K23EY027848] (to JRE) and grant [K01AG052640] (to BKS).
Publisher Copyright:
© 2020 Taylor & Francis Group, LLC.
PY - 2021
Y1 - 2021
N2 - Purpose: Recent innovations in mobile technology for the measurement of vision present a valuable opportunity to measure visual function in non-clinical settings, such as in the home and in field-based surveys. This study evaluated agreement between a tablet-based measurement of distance and near acuity and contrast sensitivity as compared to gold-standard clinical tests. Methods: Participants aged ≥55 years recruited from a tertiary eye clinic underwent testing with three tablet-based and corresponding gold-standard clinical measures (ETDRS distance acuity, Pelli-Robson contrast sensitivity, and MNRead near acuity). Correlation and agreement between tablet-based and clinical tests were assessed. Results: A total of 82 participants with a mean age of 69.1 (SD = 7.6) years, and majority female (67.1%) and white (64.6%), were enrolled in this study. The mean (SD) difference between the tests (gold-standard–tablet) was −0.04 (0.08) logMAR for distance acuity, −0.11 (0.13) log units for contrast sensitivity, and −0.09 (0.12) logMAR for near acuity. 95% limits of agreement for distance acuity (-0.21, 0.12 logMAR), near acuity (-0.34, 0.14 logMAR), and contrast sensitivity (-0.36, 0.14 logCS) were also determined. The correlation between tablet-based and gold-standard tests was strongest for distance acuity (r = 0.78), followed by contrast sensitivity (r = 0.75), and near acuity (r = 0.67). The agreement between the standard and tablet-based methods did not appear to be dependent on the level of vision. Conclusions: This study demonstrates the agreement of tablet-based and gold-standard tests of visual function in older adults. These findings have important implications for future population vision health surveillance and research.
AB - Purpose: Recent innovations in mobile technology for the measurement of vision present a valuable opportunity to measure visual function in non-clinical settings, such as in the home and in field-based surveys. This study evaluated agreement between a tablet-based measurement of distance and near acuity and contrast sensitivity as compared to gold-standard clinical tests. Methods: Participants aged ≥55 years recruited from a tertiary eye clinic underwent testing with three tablet-based and corresponding gold-standard clinical measures (ETDRS distance acuity, Pelli-Robson contrast sensitivity, and MNRead near acuity). Correlation and agreement between tablet-based and clinical tests were assessed. Results: A total of 82 participants with a mean age of 69.1 (SD = 7.6) years, and majority female (67.1%) and white (64.6%), were enrolled in this study. The mean (SD) difference between the tests (gold-standard–tablet) was −0.04 (0.08) logMAR for distance acuity, −0.11 (0.13) log units for contrast sensitivity, and −0.09 (0.12) logMAR for near acuity. 95% limits of agreement for distance acuity (-0.21, 0.12 logMAR), near acuity (-0.34, 0.14 logMAR), and contrast sensitivity (-0.36, 0.14 logCS) were also determined. The correlation between tablet-based and gold-standard tests was strongest for distance acuity (r = 0.78), followed by contrast sensitivity (r = 0.75), and near acuity (r = 0.67). The agreement between the standard and tablet-based methods did not appear to be dependent on the level of vision. Conclusions: This study demonstrates the agreement of tablet-based and gold-standard tests of visual function in older adults. These findings have important implications for future population vision health surveillance and research.
KW - Tablet-based vision tests
KW - contrast sensitivity
KW - distance visual acuity
KW - iPad-based vision tests
KW - near acuity
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U2 - 10.1080/09286586.2020.1846758
DO - 10.1080/09286586.2020.1846758
M3 - Article
C2 - 33185485
AN - SCOPUS:85096117731
SN - 0928-6586
VL - 28
SP - 293
EP - 300
JO - Ophthalmic Epidemiology
JF - Ophthalmic Epidemiology
IS - 4
ER -