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