Visual acuity testability and comparability in Australian preschool children: The Sydney paediatric eye disease study

Leone, J. F., Gole, G. A., Mitchell, P., Kifley, A., Pai, A. S-I and Rose, K. A. (2012) Visual acuity testability and comparability in Australian preschool children: The Sydney paediatric eye disease study. Eye, 26 7: 925-932.


Author Leone, J. F.
Gole, G. A.
Mitchell, P.
Kifley, A.
Pai, A. S-I
Rose, K. A.
Title Visual acuity testability and comparability in Australian preschool children: The Sydney paediatric eye disease study
Journal name Eye  (ERA 2012 Listed)    (ERA 2010 Rank B)   Check publisher's open access policy
Publication date 2012-07
Sub-type Article
DOI 10.1038/eye.2012.60
Volume number 26
Issue number 7
ISSN 0950-222X; 1476-5454
Start page 925
End page 932
Total pages 8
Place of publication London, United Kingdom
Publisher Nature
Collection year 2013
Language eng
Formatted abstract Purpose: To establish standardised protocols for vision screening, testability and comparability of three different vision tests were examined in a population-based, cross-sectional sample of preschool children (Sydney Paediatric Eye Disease Study).

Methods: Measurement of presenting monocular distance visual acuity (VA) using the Amblyopia Treatment Study (ATS) HOTV protocol, was attempted by all (1774) children aged≥24 months. In addition, in children aged≥60 months (576), VA was also tested using the logMAR retro-illuminated HOTV or Early Treatment Diabetic Retinopathy Study (ETDRS) linear charts (CSV 1000). Children able to have both eyes tested monocularly were considered.

Results: Testability significantly increased with age for all VA tests. The ATS HOTV with an overall testability of 80% (females: 82%, males: 78%) was the most testable of the VA tests (P<0.0001). In children aged <3 years testability was low (≤47%) rising to≥80% in children aged≥3. In children≥60 months, testability was higher for the HOTV (94%) than the ETDRS (59%) chart. In those that did two VA tests, mean difference of the ATS HOTV compared with the HOTV(CSV) was -0.1, and compared with ETDRS was -0.12 (P<0.0001).

Conclusions: Children aged <3 years had poor VA testability, whereas those 3 years and above were highly testable using the ATS HOTV. The HOTV (CSV) retro-illuminated test was appropriate for children aged >5 years, and may be possible in younger children with early educational exposure. When comparing VA measures using these tests, the higher VA attained using the ATS HOTV, needs to be taken into account.
Keyword Visual acuity
Child
Preschool
Vision screening
Cross-sectional studies
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 13 April 2012.

Document type: Journal Article
Sub-type: Article
Collections: Official 2013 Collection
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