Ключевые слова: acuity, astigmatism, care, chart, check, closeup, concept, correction, cure, deviation, diopter, doctor, eye, eyeglasses, eyesight, eyewear, glasses, health, healthcare, hypermetropia, impairment, lens, letter, measure, medical, medicine, myopia, oculist, ophthalmologist, ophthalmology, optic, optical, optician, optometrist, optometry, pen, point, presbyopia, service, shop, shortsightedness, sight, silver, snellen, spectacles, table, test, treatment, vision, visual,