Ключевые слова: abstract, aim, attention, black, blur, blurred, blurry, cataracts, clear, concentrate, concentration, concept, design, eye, fatigue, focus, focused, goals, headlines, icon, idea, illustration, image, intelligence, letters, looking, magnify, medical, message, motivation, optometry, purpose, realization, report, search, see, sharp, sharpness, sight, sign, soft, succeed, success, symbol, text, vision, white, word, work,