Ключевые слова: astigmatism, background, care, clinic, cornea, correction, desease, diagnosis, diagnostic, examination, eye, eyeglasses, eyesight, far, glasses, glaucoma, health, instrument, iris, lens, long, looking, macro, medical, medicine, myopia, oculist, ophthalmic, ophthalmologist, ophthalmology, optic, optician, optometrist, optometry, phoropter, retina, see, set, sight, sighted, specs, spectacles, test, tool, treatment, vision, visual,