Ключевые слова: astigmatism, blurry, care, checkup, clear, clinic, correct, diagnose, diagnosis, disease, disorder, doctor, equipment, exam, examination, eye, eyesight, glasses, headache, health, healthcare, hospital, hyperopia, improve, instrument, lenses, measure, medical, medicine, myopia, ophthalmologist, ophthalmology, optical, optometrist, optometry, patient, phoropter, presbyopia, prescription, see, strain, technology, test, treatment, trial, vision,