The trouble started every day at around 3 p.m., after Cathy Higgins had spent five or six hours staring at an array of computer screens at her desk. Her university job overseeing research projects involved peering closely at numbers and details on contracts, applications and budgets.
“My vision was so blurry, I couldn’t even see what was on the screen, and I was squinting so much that I could not function,” Higgins said.
