Ключевые слова: astigmatism, care, clinic, contact, correction, corrective, device, diagnosis, diopter, doctor, equipment, exam, examination, eye, eyeglasses, eyesight, frame, glasses, health, healthcare, hospital, hyperopia, instrument, lens, lenses, measurement, medical, myopia, oculist, ophthalmic, ophthalmologist, ophthalmology, opthalmologic, optic, optical, optician, optics, optometrist, optometry, patient, phoropter, presbyopia, professional, set, technology, test, tool, treatment, trial, vision,