Look, Ma, no drops in my eyes / Son's loss of sight inspires dad to invent easier way for eye doctors to check retinas: "Today, the Optomap, made by Optos PLC of Dunfermline, Scotland, is gaining widespread acceptance by eye-care professionals. It is in about 1,100 U.S. eye-care offices, including more than 40 in the Bay Area, according to Barry Schafer, Western sales representative. "