Risks and precautions Test should be done on undilated pupils. Keep your uncovered eye fixed on the central black dot on the grid. No changes necessary. No changes necessary. No changes necessary.
Discomfort disappears when the test is finished.
Disposable tissues or disposable eyepatches. Description of test Sit upright. Cover one eye, then the other. Stare at the black dot in the center. Answer the examiner's questions.