Ключевые слова: alphabet, background, bad, blur, blurry, care, chart, check, concept, conceptual, diagnosis, diagnostic, equipment, examination, eye, eyeglasses, eyesight, eyewear, focus, glass, health, isolated, lens, ophthalmology, optical, optics, optometrist, optometry, read, see, sharp, sight, specs, symbol, test, text, vision, visual, word,