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Testing Pediatric Acuity With an iPad: Validation of "Peekaboo Vision" in Malawi and the UK.
- Source :
-
Translational vision science & technology [Transl Vis Sci Technol] 2018 Jan 09; Vol. 8 (1), pp. 8. Date of Electronic Publication: 2018 Jan 09 (Print Publication: 2019). - Publication Year :
- 2018
-
Abstract
- Purpose: To evaluate two builds of the digital grating acuity test, "Peekaboo Vision" (PV), in young (6-60 months) populations in two hospital settings (Malawi and United Kingdom).<br />Methods: Study 1 evaluated PV in Blantyre, Malawi ( N = 58, mean age 33 months); study 2 evaluated an updated build in Glasgow, United Kingdom ( N = 60, mean age 44 months). Acuities were tested-retested with PV and Keeler Acuity Cards for Infants (KACI). Bland-Altman techniques were used to compare results and repeatability. Child engagement was compared between groups. Study 2 included test-time comparison.<br />Results: Study 1 (Malawi): The mean difference between PV and KACI was 0.02 logMAR with 95% limits of agreement (LoA) of 0.33 to 0.37 LogMAR. On test-retest, PV demonstrated 95% LoA of -0.283 to 0.198 logMAR with coefficient of repeatability (CR) 0.27. KACI demonstrated 95% LoA of -0.427 to 0.323 logMAR, and larger CR was 0.37. PV evidenced higher engagement scores than KACI ( P = 0.0005). Study 2 (UK): The mean difference between PV and KACI was 0.01 logMAR; 95% LoA was -0.413 to 0.437 logMAR. Again, on test-retest, PV had narrower LoA (-0.344 to 0.320 logMAR) and lower CR (0.32) versus KACI, with LoA -0.432 to 0.407 logMAR, CR 0.42. The two tests did not differ in engagement score ( P = 0.5). Test time was ∼1 minute shorter for PV (185 vs. 251 s, P = 0.0021).<br />Conclusions: PV gives comparable results to KACI in two pediatric populations in two settings, with benefits in repeatability indices and test duration.<br />Translational Relevance: Leveraging tablet technology extends reliable infant acuity testing to bedside, home, and rural settings, including areas where traditional equipment cannot be financed.
Details
- Language :
- English
- ISSN :
- 2164-2591
- Volume :
- 8
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Translational vision science & technology
- Publication Type :
- Academic Journal
- Accession number :
- 30637178
- Full Text :
- https://doi.org/10.1167/tvst.8.1.8