Ключевые слова: astigmatism, background, care, chart, check, checking, clinic, container, correction, defect, diagnostic, different, diopter, doctor, equipment, examination, eye, flat, frame, glasses, health, hospital, illness, lay, lens, lenses, many, medical, myopia, object, ophthalmologist, ophthalmology, optical, optician, optometry, optotype, paper, professional, sight, specialist, spectacles, test, tools, top, trial, tweezers, view, vision, white, wooden,