Michael S. Krzak knew something was wrong.
It was December 2006 and Krzak, a plaintiff lawyer at Clifford Law Offices, was bottle-feeding Emma, his 5½-week-old daughter. They sat in a dark room, save for a bit of light sneaking in from the nearby kitchen.
Suddenly, as Emma twisted her head back and forth, the light shined across her face. Her right eye flashed the way a cat’s eye might if you shined a flashlight into it. Michael looked at her eye and saw a discolored hue.
He knew that look. Not from …