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THE UNEQUAL NYSTAGMUS TEST

In children who exhibit nystagmus secondary to visual impairment, the better eye determines the quality of the nystagmus. 40 children with different visual acuities and 10 with the same vision in each eye were studied. By inspecting the behaviour of the nystagmus in each eye, while covering the other, it was possible to identify which eye had better foveal vision. This co‐called ‘unequal nystagmus test’ is very simple to do and it offers valuable information.