In the series, we learn that Geordi was born blind and wears a VISOR, an arc-shaped prosthetic attached at the temples that provides him with vision. Interfacing directly with his brain, the device enables him to “see” much of the electromagnetic spectrum – radio waves, infrared, ultraviolet, and beyond, but not normal light perception, though it does allow Geordi to see the visible light section of the EM spectrum.
La Forge was born February 16, 2335 in Mogadishu, Somalia of the African Confederation on Earth to Silva La Forge, a Starfleet command track officer and eventual Captain of the USS Hera (NCC-62006) and Edward M. La Forge, a Starfleet exozoologist. He has also mentioned having a sister, Arianna. La Forge stated that with two parents in Starfleet he was an “army brat“, frequently moving homes depending on where his parents were stationed around Earth (or other planets). He attended Zefram Cochrane High School and then Starfleet Academy from 2353 to 2357. In 2357, he was assigned as an ensign aboard the USS Victory under Captain Zimbata. After his first cruise, he was transferred to the USS Hood serving with then Lt. Commander William Riker for her 2361-64 cruise, during which he was promoted to lieutenant junior grade.
La Forge once impressed Captain Jean-Luc Picard by staying up all night to fix a shuttle craft that Picard mentioned had a superficial problem. Upon learning this, Picard decided he wanted Geordi on his next command which ended up being the Enterprise-D where Geordi was assigned to him as a helmsman. At the beginning of Season 2, he was promoted to Lieutenant and named Chief Engineer; in Season 3, he rose to Lieutenant Commander, a rank that he held for the duration of the series and movies.
In 2372, Geordi is transferred to the new Sovereign class starship Enterprise-E. When the ship travels back in time to the 21st century, he works alongside Dr. Zefram Cochrane and helps him successfully launch Earth’s first warp-capable vessel and achieve first contact with the Vulcans.