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. 2008 Apr;12(2):145-9.
doi: 10.1016/j.jaapos.2007.08.014. Epub 2007 Dec 26.

Normative pediatric visual acuity using single surrounded HOTV optotypes on the Electronic Visual Acuity Tester following the Amblyopia Treatment Study protocol

James R Drover  1 , Joost Felius, Christina S Cheng, Sarah E Morale, Lauren Wyatt, Eileen E Birch
Affiliations

Normative pediatric visual acuity using single surrounded HOTV optotypes on the Electronic Visual Acuity Tester following the Amblyopia Treatment Study protocol

James R Drover et al. J AAPOS. 2008 Apr.

Abstract

Purpose: To provide normative pediatric visual acuity data using HOTV optotypes presented on the Electronic Visual Acuity Tester following the Amblyopia Treatment Study (ATS) protocol.

Methods: Monocular testing was conducted on 384 healthy full-term children ranging from 3 to 10 years of age (mean, 5.4 years; SD, 1.8 years). A total of 373 children completed monocular testing of each eye. In addition, 23 adults (mean, 28.7 years; SD, 4.9 years) were tested for comparison. Both monocular visual acuity and interocular acuity differences were recorded.

Results: Mean visual acuity improved by slightly more than one line (0.12 logMAR) from 3 years of age to adulthood, increasing from 0.08 logMAR to -0.04 logMAR (F(6,400) = 26.3, p < 2.0 x 10(-26)). At all ages, mean interocular acuity difference was less than one line on a standard acuity chart (overall mean difference = 0.04 logMAR; SD, 0.06 logMAR).

Conclusions: These results represent the first normative data reported for HOTV optotypes using the ATS protocol on the Electronic Visual Acuity Tester. These data may play an important role in clinical practice, screening, and clinical research.

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Figures

Figure 1
Figure 1
Normal visual acuity from participants in the present study and those in other studies plotted as a function of age. Note that visual acuity scores from 8–10 year-olds in the present study are combined and plotted at 9 years of age. (-●- Shea & Gaccon, 2006, Glasgow Acuity Cards; -○- Simmers et al., 1997, Glasgow Acuity Cards; -▼-Simmers et al., 1997, Sheridan-Gardiner; -■- Sheridan, 1960, HOTV; -▽- Slataper, 1950, Tumbling E; -□-Simons, 1983, Landolt C; -◇-Wiess, 1973, Tumbling E; -◆-Weiss, 1973, Tumbling E; - formula image-Morad et al., 1999, Tumbling E; - formula image-Morad et al., 1999, Linear Tumbling E; - formula image- Brant & Novotny, 1976, Snellen; - formula image- Brant & Novotny, 1976; Tumbling E; - formula image- Current Study, HOTV).
Figure 2
Figure 2
Mean visual acuity from participants in the present study and from the fellow eye of children with amblyopia (fellow eye data are drawn from the Pediatric Eye Disease Investigator Group18). Bars represent one standard deviation from the mean.
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References

    1. Chen SI, Chandna A, Norica AM, Pettet M, Stone D. The repeatability of best corrected acuity in normal and amblyopic children 4 to 12 years of age. Invest Ophthalmol Vis Sci. 2006;47:614–9. - PubMed
    1. Ferris FL, III, Bailey I. Standardizing the measurement of visual acuity for clinical research studies. Guidelines from the Eye Care Technology Forum. Ophthalmology. 1996;103:181–2. - PubMed
    1. Moke PS, Turpin AH, Beck RW, et al. Computerized method of visual acuity testing: Adaptation of the amblyopia treatment study visual acuity testing protocol. Am J Ophthalmol. 2001;132:903–9. - PubMed
    1. Kulp MT, Dobson V, Peskin E, et al. The electronic visual acuity tester: Testability in preschool children. Optom Vis Sci. 2004;81:238–44. - PubMed
    1. Holmes JM, Beck RW, Repka MX, et al. The Amblyopia Treatment Study visual acuity testing protocol. Arch Ophthalmol. 2001;119:1345–53. - PubMed

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