Ключевые слова: acuity, adult, astigmatism, background, care, caucasian, clean, closeup, contact, cornea, correct, correction, corrective, defect, eye, eyesight, eyestrain, eyewear, face, farsighted, farsightedness, female, finger, girl, hand, health, hygiene, inserting, lens, lenses, medical, medicine, myopia, nearsighted, nearsightedness, ophthalmology, optic, optical, optometry, person, prescription, putting, retina, shortsighted, sight, soft, treatment, vision, woman, young,