Mr. Sorensen, a longtime friend of the Petersons, was recovering from a recent stroke and had all but lost his eyesight.
In 1991, before he was pope, he suffered a hemorrhagic stroke that briefly affected his eyesight.
The memoir, she explains, was an attempt to interpret the loss of eyesight constructively.
eyesight eye·sight (ī'sīt')
The faculty of sight; vision.
Range of vision; view.