Ключевые слова: adult, assist, background, blind, blindness, blurred, cane, care, careful, city, closeup, crossing, crosswalk, danger, difficulty, disability, disabled, eye, eyesight, female, handicap, handicapped, health, help, impaired, legs, lifestyle, long, navigation, ophthalmology, orientation, outdoors, pedestrian, person, road, roadway, safety, shoes, sight, sightless, space, stick, street, vision, visual, walk, walking, white, woman, zebra,