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The Teller Acuity Card test was used to examine 49 normal children, 77 with strabismus, 9 with anisometropia and 19 with various organic ocular diseases. The vision of some of these children was also tested with the Landolt C and fixation preference tests. A comparison of the three tests showed that strabismic amblyopia is not reliably detected with the Teller Acuity Cards. On the other hand, this test appears to be a good one for detecting loss of acuity due to ocular diseases.

SummaryIn this paper, we show that the development of acuity in infancy is not due solely to foveal maturation , since there is a clear development of acuity in the peripheral visual field.The development of peripheral acuity, and the naso-temporal asymmetry during early development reinforce the idea that the visual loss in adult strabismic amblyopes is not due to an arrest of development, but rather to the chronic inter ocular suppression of the deviated eye.The Teller Acuity Card Test does not reliably detect strabismic amblyopia , and therefore should not be recommended as a screening test. However, the test is adequate for diagnosing visual losses in children with organic eye disorders and poss ibly anisometropia.

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