Topic: Empress Eugénie (1826–1920), the widow of Emperor Napoléon III of France, developed mature cataracts late in life. In 1920, at age 94, she underwent surgery to one eye by Ignacio Barraquer (1884–1965), a member of the famous dynasty of ophthalmologists originally from Barcelona, Spain. Clinical relevance: Barraquer used his new instrument which employed a vacuum cup to hold the lens for intracapsular extraction. Methods: Research of historical documents. Results: The surgery was a success; the Empress was pleased that she could read again although she did not have long to live. She was his first famous cataract patient and his fame spread internationally. Barraquer spoke at the International Congress of Ophthalmology held in Washington, DC, in 1922 and demonstrated his technique on patients in Washington, DC, New York, Boston, Philadelphia and Richmond, VA. Conclusion: Barraquer's surgery on Éugenie, who was the most powerful woman in Europe during her husband's reign, influenced the course of development of cataract surgical technique.