Ключевые слова: astigmatism, background, care, chart, check, clinic, consultation, correction, device, diagnosis, diagnostic, diopter, doctor, equipment, exam, examination, eye, eyeglasses, eyesight, frame, glasses, health, hospital, instrument, lens, looking, measurement, medical, medicine, myopia, oculist, ophthalmic, ophthalmologist, ophthalmology, optic, optical, optician, optometrist, optometry, patient, phoropter, professional, sight, technology, test, tool, treatment, vision, visual,