Ключевые слова: acuity, astigmatism, background, care, chart, check, concept, conceptual, correction, corrective, diagnosis, diagnostic, disease, doctor, exam, examination, eye, eyeglass, eyesight, focus, frame, glass, health, healthcare, lens, look, looking, measure, medical, medicine, myopia, oculist, ophthalmologist, ophthalmology, optic, optical, optician, optometrist, optometry, reading, see, senior, sight, spectacle, symbol, test, view, vision, visual, white,