Dean Winchester found out at the age of fourteen that he had Glaucoma. glau·co·ma ɡlôˈkōmə/ noun MEDICINE a condition of increased pressure within the eyeball, causing gradual loss of sight. By the time he reached age sixteen, he was fully blind. His friends abandoned him, his mom died in a house fire, and his dad became depressed. Dean's younger brother, Sam, takes care of Dean everyday while their dad works. Sam dropped out of school to stay with Dean, Sam being a year younger than his brother. One day, Sam took Dean to a library to read to him, but a boy named Castiel decided to talk to them.