Ключевые слова: alphabet, astigmatic, blur, care, chart, check, clear, diagnostic, equipment, exam, examination, eye, eyeglasses, eyesight, farsighted, focus, frame, glass, glasses, health, lenses, medical, nearsighted, optical, optometrist, optometry, read, see, sharp, shortsighted, sight, snellen, test, text, through, vision, visual, wood,