Lights On-Off Test

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a.k.a. Small field central fusion test This test is useful in the setting of diplopia in the presence of a dragged fovea causing diplopia giving central-peripheral rivalry

see De Pool ME. et al. The Dragged-Fovea Diplopia Syndrome: Clinical Characteristics, Diagnosis and Treatment. Ophthalmology 2005;112:1455-1462

test, strabismus

test strabismus