Ключевые слова: astigmatism, background, blurred, care, chart, check, checking, clinic, closeup, consultation, correction, defect, diagnostic, diopter, doctor, equipment, examination, eye, frame, glasses, health, help, hospital, illness, lens, light, medical, medicine, myopia, object, oculist, ophthalmologist, ophthalmology, optical, optician, optometry, optotype, paper, poster, prescription, professional, service, sight, specialist, spectacles, test, tool, trial, vision,