Ключевые слова: alphabet, attitude, banner, behind, billboard, board, care, chart, check, cheerful, concept, exam, examination, expression, eye, eyeglasses, eyesight, glass, health, healthcare, icon, isolated, lens, letter, look, looking, medical, medicine, object, ophtalmology, ophthalmology, optical, optometry, panel, peek, person, placard, poster, read, reading, sight, sign, signboard, simple, test, vision, visual, white,