Ключевые слова: acuity, astigmatism, background, black, care, chart, check, color, correction, corrective, dark, examination, eye, eyeglasses, eyesight, farsightedness, health, lens, lenses, medic, medical, medicine, myopia, nearsightedness, nobody, object, oculist, ophthalmologist, ophthalmology, optic, optical, optometry, paper, prescription, read, sheet, sight, test, text, vision,