Ключевые слова: accessibility, aged, alphabet, amd, awareness, blind, blindness, braille, communicate, communication, day, degeneration, disability, disabled, disease, education, eye, eyesight, handicapped, healthcare, help, illness, impact, impair, impaired, international, knowledge, language, learning, literacy, loss, month, muscular, national, opportunity, page, patients, problem, reader, related, school, service, sight, sightless, student, studying, system, teach, universal, visual,