Table 1 Fail score criteria for each screening test

Visual Acuity

<  0.30 LogMAR

Cover Test

Any obvious deviation to eye movement (tropia)

Hirschberg’s Test

Any decentration from corneal reflex

External Observation

Any abnormality

Ophthalmoscopy

Any abnormality

Cycloplegic Refraction

Myopia: > −0.50 D

Hyperopia: > + 1.50 D

Astigmatism: >  0.75 D

Prism Cover Test

Esophoria Near: > 5Δ Far: > 6Δ

Exophoria Near: > 5Δ Far: > 10Δ

Hyperphoria: > 2Δ

Heterotropia: Any amount of heterotropia