Ключевые слова: aid, care, chart, check, clean, clear, closeup, concept, diagnostic, diopter, disease, distance, doctor, exam, examination, eye, eyeglasses, eyesight, focus, glasses, health, lens, lense, letter, medical, medicine, myopia, nearsighted, oculist, ophthalmologic, ophthalmologist, ophthalmology, optical, optician, optics, optometrist, optometry, read, see, short, sight, sighted, snellen, spectacles, table, test, testing, treatment, vision, visual,