J Korean Ophthalmol Soc.  2001 Jul;42(7):1030-1036.

The Clinical Interpretation of Teller Acuity Card Test in the Diagnosis of Amblyopia

• Paik HJ
• Shin MK

Abstract

PURPOSE
To evaluate the clinical interpretation and application of Teller Acuity Card(TAC) test compared with optotype acuity chart in the diagnosis of amblyopia.
METHODS
The visual acuities of 112 children(54 normal, 58 amblyopes), whose mean age was 6.5 years(3~11 years) were measured with Han's letter chart and TAC. The sensitivity, specificity, false-positive and false-negative rates of TAC Test were analyzed according to the visual acuity, age and type of amblyopia.
RESULTS
TAC acuity was higher than optotype acuity in both strabismic and anisometropic amblyopia group, however, the anisometropic amblyopia group showed higher correlation between two tests(P<0.01,r=0.0755). The sensitivity and specificity of TAC test increased in lower visual acuity group, which means that TAC test is useful in detecting amblyopia. While the false-positive rate increased in higher visual acuity group, false-negative rate increased in lower visual acuity group and in the group less than 6 years of age. And the bilateral visual acuity were underestimated than unilateral visual acuity in about 30%.
CONCLUSIONS
Though TAC test is a useful method in detecting amblyopia of infancy and childhood, an appropriate clinical diagnosis should be accompanied for the accurate diagnosis of amblyopia.

Keyword

Amblyopia; Anisometropia; Optotype acuity; Strabismus; Teller Acuity Card(TAC) test

MeSH Terms

Amblyopia*
Anisometropia
Diagnosis*
Sensitivity and Specificity
Strabismus
Visual Acuity