Ключевые слова: background, blue, blurred, care, chart, check, clear, concept, diagnostic, dioptre, doctor, exam, eye, eyeglass, eyesight, eyewear, frame, goggles, health, healthy, isolated, lens, letter, medicals, myopia, neat, object, opthalmology, optical, optometry, read, see, shape, sharpened, sight, spectacle, store, table, test, text, view, vision, visual, wear, white,