Table 3

Children with amblyopia who were not identified at preschool vision screening by the Sheridan–Gardiner single optotype test of visual acuity

ChildReason for failing preschool vision screeningHES findingsSnellen line acuity
1Decompensating esophoria + negative stereopsisAnisometropic amblyopia6/9 6/5
2Decompensating exophoria + poor motor fusionUnilateral posterior polar cataract with amblyopia6/12 6/6
  • Unaided Snellen line acuity recorded at HES before occlusion therapy was commenced. In both cases, the unaided visual acuity at preschool vision screening was 6/6 in each eye with a Sheridan–Gardiner single optotype test.