After surgery, he found tinted lenses gave him a more pleasant color balance than did clear lenses. Despite four operations, her vision never improved and she was forced to cease work. Cassatt was also diabetic and her medical treatment, which included radium inhalation, did not help her health. His surgery was not successful. Aging As an artist ages, there often are changes in colors and details of his works.
Details become less evident.
Blues and greens of early works may be replaced by reds and browns in late works. The changes in the photoreceptors filter out blue and green portions of the spectrum. These alterations may be found in the works of artists as diverse as Titian, Rembrandt, Constable, El Greco, and Renior. He said that he was totally blind in one eye and had a central scotoma in the other eye. Treatment was ineffective.