近用衛氏 4 點燈
Worth 4 Dot Flashlight
Worth 4 Dot Test is used to assess a patient’s Flat Fusional ability which is indicated any time stereopsis
falls between (50) sec of arc and those patients with suspected strabismus and on preschool children.
The Worth Test can also be used when evaluating cases of reduced monocular visual acuity that does
not improve with the Pinhole Test.