[s4e3] Blind Ambition Here

Aired much earlier on September 20, 1995, this episode deals with the dramatic fallout of character secrets and health issues. "Family Guy" Blind Ambition (TV Episode 2005) - IMDb

Despite his blindness, Peter accidentally becomes a hero himself when he unknowingly wanders into a burning building (The Drunken Clam) and saves the bartender, Horace. [S4E3] Blind Ambition

In an attempt to set a world record, Peter decides to eat a massive number of nickels. This leads to severe nickel poisoning, causing him to go permanently (though temporarily for the series) blind. Aired much earlier on September 20, 1995, this

Originally aired on May 15, 2005, this episode focuses on Peter Griffin's jealousy over his friends' accomplishments. This leads to severe nickel poisoning, causing him

The episode also features a storyline where Quagmire is caught spying on Lois and undergoes "recovery" for his sex addiction. Melrose Place: Season 4, Episode 3