Ключевые слова: adult, animal, assistance, assisting, blind, blindness, cane, care, caucasian, city, disability, disabled, dog, domestic, eye, eyesight, friend, guide, handicapped, handler, health, help, helping, illness, impaired, labrador, lead, lifestyle, male, man, mature, navigation, ophthalmology, orientation, outdoors, person, pet, retriever, see, service, sight, sightless, stick, street, trained, unsighted, vision, visual, walking, white,