Ключевые слова: adult, asian, assistance, blind, blindness, businessman, city, comfort, crossing, day, difficulty, disabled, eyewear, glasses, guidance, guide, guy, help, illness, lifestyle, male, man, movement, navigation, one, outdoors, outside, people, person, portrait, protect, protection, road, safe, safety, sick, sickness, sightless, sign, standing, step, stick, street, sun glasses, vision, visionless, walk, walking, way, young,