Ключевые слова: acuity, adult, applying, astigmatism, background, care, caucasian, closeup, contact, correction, corrective, defect, eye, eyesight, eyestrain, eyewear, farsighted, farsightedness, female, finger, hand, health, inserting, lens, lenses, medic, medical, medicine, myopia, nearsighted, nearsightedness, oculist, ophthalmologist, ophthalmology, optic, optical, optometry, person, prescription, problem, putting, shortsighted, shortsightedness, sight, therapy, treatment, vision, woman, young,