The Teller acuity card
procedure, which is a form of the preferential looking test, is a way of assessing
visual acuity in preverbal
patients. It has been shown to be rapid and easy test to perform. Teller acuity cards were used to detect
amblyopia in 100
patients(from 2 months to 9 years) and the result was compared to the
clinical judgement of
amblyopia. The
sensitivity,
specificity and
efficiency of Teller acuity card
procedure compared to the
clinical judgement of
amblyopia were 71.43%, 94.94% and 90.00%, respectively. The authors found that the acuity cards could be used to detect
amblyopia. However, the
clinical judgement of
amblyopia of the
ophthalmologist was more sensitive in diagnosing
amblyopia than the Teller acuity cards in the presence of various ocular disorders.