as the want of a vision water sun , the want of that vision water will decrease
daylight_vision is sight. cold_air has less_water light_water is water. still_water is good_reflector_of_light. night_vision is sight. magnifying_glass is vision_aid. wearing_eyeglasses has effect_of_improving_vision whales has poor_vision visual_perception is perceiving. color_vision is sight.