Table 1 Fail score criteria for each screening test
From: Status of visual impairment among indigenous (Orang Asli) school children in Malaysia
Test | Fail Score Criteria |
|---|---|
Visual Acuity | <鈥� 0.30 LogMAR |
Cover Test | Any obvious deviation to eye movement (tropia) |
Hirschberg鈥檚 Test | Any decentration from corneal reflex |
External Observation | Any abnormality |
Ophthalmoscopy | Any abnormality |
Cycloplegic Refraction | Myopia: > 鈭�0.50 D |
Hyperopia: > +鈥�1.50 D | |
Astigmatism: >鈥� 0.75 D | |
Prism Cover Test | Esophoria Near: > 5螖 Far: > 6螖 |
Exophoria Near: > 5螖 Far: > 10螖 | |
Hyperphoria: > 2螖 | |
Heterotropia: Any amount of heterotropia |