Abstract
This study evaluated the reproducibility of the Teller Acuity Cards (TAC) test, its correlation with the optotype test, and its usefulness for detecting amblyopia in preliterate children. We retrospectively reviewed the medical records of 64 children who had undergone the TAC test more than once and were later followed up with the optotype test. The mean corrected visual acuities (logMAR) of the first and last TAC tests were 0.86 (mean 19.9 months) and 0.69 (27.7 months), respectively. The first optotype acuity was 0.18 (33.7 months). The first TAC acuity result was positively correlated with the age of the child, but it was not statistically significant (r = −0.077, p > 0.05). The first and last TAC test acuities were significantly correlated (r = 0.382, p < 0.01). There was a significant but small correlation between the final TAC and the first optotype acuities (r = 0.193, p < 0.05). Interocular differences in visual acuity were significantly correlated between the last TAC and first optotype tests (r = 0.395, p < 0.05). TAC acuity might be a valid predictor of optotype acuity later on although it was underestimated compared to that in the optotype test. The TAC test can be used to detect unilateral amblyopia in preliterate children.
Highlights
The Teller Acuity Cards (TAC) test is one of the preferential-looking (PL) procedures and has been widely used in laboratory and clinical settings for the assessment of grating acuity of nonverbal children and infants [1, 2]
When the TAC visual acuity was assessed for the first time, the mean age was 19.86 ± 5.67 months, and when assessed for the last time, the mean age was 27.67 ± 5.57 months
The average interval between the first and last TAC tests in the same subject was 7 months
Summary
The Teller Acuity Cards (TAC) test is one of the preferential-looking (PL) procedures and has been widely used in laboratory and clinical settings for the assessment of grating acuity of nonverbal children and infants [1, 2]. Atkinson and Braddick [3, 4] analyzed acuity development in a large sample of infants having a first-degree relative with a history of amblyopia and/or strabismus. They reported that the initial Forced-choice Preferential Looking (FPL) estimates obtained between 8 and 11 weeks of age did not correlate significantly with those obtained between 6 and 9 months of age. Maurer et al [6] compared FPL acuity results obtained at 12, 18, 24, 30, and 36 months of age with recognition letter acuity estimates collected after four years old in 35
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