Ключевые слова: astigmatism, background, blue, care, chart, check, checking, clinic, closeup, correction, defect, diagnostic, diopter, doctor, equipment, examination, eye, female, glasses, hands, health, help, holding, hospital, illness, lens, medical, medicine, myopia, oculist, ophthalmologist, ophthalmology, optical, optician, optometry, optotype, paper, patient, person, poster, prescription, professional, service, sight, specialist, spectacles, test, tool, vision, woman,