Ключевые слова: background, better, blind, blurred, care, clear, correction, defective, different, diopter, doctor, eye, eyes, eyesight, farsighted, focus, glass, glasses, goggles, hand, health, healthcare, help, illustration, impaired, lens, medicine, modern, myopic, nature, optician, park, perspective, reading, recipe, see, sehhilfe, sehtest, sharp, sight, spectacle, sunglasses, transparent, vision, visually,