Refractive Error Strabismic Abnormal Binocular Interaction Deprivational* Obstruction of Visual Axis See Strabismus scheme Amblyopia AMBLYOPIA Ptosis Congenital Cataracts Congenital Corneal Opacities Hemangioma Retinal Disease/Damage (undiagnosed not responsive to treatment) Severe Anisometripia (Unequal Refractive Error) Hyperopia Astigmatism* Can cause permanent visual impairment if not treated urgently in infancy Clinical Pearl:Congenital cataracts and retinoblastoma's cause leukocoria and a decreased red reflex

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