I always thought the worst moment of my life was burying my husband Harold.

I was wrong.

The worst moment was sitting in Dr. Robert Caldwell’s office in Indianapolis, Indiana, hearing him say the word “blind” while my son’s voicemail played in my ear.

“Mrs. Patterson,” Dr. Caldwell said, his voice as gentle as a man could make it, “we’ve caught this just in time. The procedure is straightforward, but we must act within two weeks. If we wait any longer, I cannot promise we can preserve your sight.”