Among other tests for simulated blindness, JACKSON suggest the employment of a prism of six or eight degrees placed with its base towards the temple. If there is vision, that eye will instinctively turn in, order to avoid double images.
Reference:Arch Ophthalmol. 1898;27:139.
A look at the past. . . Arch Ophthalmol. 1999;117(5):702. doi:https://doi.org/10.1001/archopht.117.5.702
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