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LIGHTING AN EXAMINATION ROOM TO AVOID ERROR*

ABSTRACT Unless examination room lighting conditions are standardized, comparison of measurements by various clinicians becomes meaningless. An effective public health program will force uniformity. Visibility of test figures depends on size, contrast, and type of figure chosen. Significant factors in the examination room environment are room dimensions, shape, lighting, and viewing and projection angles. This study demonstrates the magnitude of error and lack of agreement occurring in clinical testing rooms and suggests recommendations for avoiding such errors.