Clearly and quickly hear or otherwise sense alarms or warning and take appropriate action, maintain equilibrium to prevent falling when moving, walking, standing, kneeling or crouching- particularly on narrow, uneven, irregular, slippery surfaces, going up and down ladders, stairs, scaffolding, ramps, poles or other objects using hands, arms, feet or legs. Ability to see and distinguish colors, to visually distinguish shapes and patterns, to accurately sense distances (depth perception), to accurately see objects and detect motion and wide angles (peripheral vision).