Ключевые слова: adjust, blur, blurred, care, child, clear, correct, correctable, correction, corrective, correctly, diagnosis, examination, eye, eyeglasses, eyesight, eyestrain, eyewear, fix, focus, glass, glasses, kid, lens, letter, male, object, ophthalmologist, optical, optometrist, person, schema, see, sharp, sharpness, sight, vision,