Optic weaponry

Though optic sensors are intended to be for seeing an opponent, they can also make a nifty weapon as well. As such, optic lasers are a very useful weapon to have.

Generation 1 cartoon
Laserbeak contained optic lasers in his eyes, using them to both spy on the Autobots and rain death upon them. He used them to blast a window of Shawn Berger's office, allowing him to take the corpulent businessman to the Decepticons. Laserbeak also used them to open doors and potholes while in New York.

Optimus Prime also possessed optic lasers, using them in personal combat to knock Megatron off a cliff once.

Beast Wars
Optic lasers were the only energy weapon that the Predacon turned Maximal Dinobot allowed himself to possess, as his code of honor had an emphasis on persoal combat. The optic lasers appeared to be tied to his own Energon supply, making them potentially risky. Dinobot used the last of his energy to destroy the Golden Disk with his optic lasers, sacrificing his life.