Clinical usefulness of the teller acuity cards test in preliterate children and its correlation with optotype test: A
Hye Jun Joo1, Ho Chul Yi1, Dong Gyu Choi1
1Department of Ophthalmology, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, Seoul, Korea.
Insights
The Teller Acuity Cards (TAC) test shows good reproducibility and can help detect amblyopia in young children. While it may underestimate visual acuity compared to optotype tests, TAC results correlate with later optotype findings.
Area of Science:
- Ophthalmology
- Pediatric Vision Science
Background:
- Assessing visual acuity in preliterate children is challenging.
- The Teller Acuity Cards (TAC) test is a common method for visual assessment in this age group.
- Detecting amblyopia early is crucial for effective treatment.
Purpose of the Study:
- To evaluate the reproducibility of the Teller Acuity Cards (TAC) test.
- To assess the correlation between TAC test results and optotype tests.
- To determine the usefulness of the TAC test in detecting amblyopia in preliterate children.
Main Methods:
- Retrospective review of medical records for 64 preliterate children.
- Analysis of multiple TAC tests and subsequent optotype testing.
- Statistical correlation analysis between TAC and optotype visual acuities.
Main Results:
- TAC test acuities showed significant correlation over time (r = 0.382, p < 0.01).
- A significant, though small, correlation was found between final TAC and initial optotype acuities (r = 0.193, p < 0.05).
- Interocular acuity differences correlated significantly between the last TAC and first optotype tests (r = 0.395, p < 0.05).
Conclusions:
- The TAC test demonstrates reproducibility in preliterate children.
- TAC acuity can be a predictor of later optotype acuity, though it may underestimate values.
- The TAC test is a useful tool for detecting unilateral amblyopia in this population.
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.
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