I've heard that in the databook Fubuki says Blast can shoot lasers from his eyes. Is this true? Can Blast shoot lasers from his eyes?
I assume you've read this in the wiki since there has been no other mention about this that I could find. With that, let me quote what was exactly written:
Fubuki speculates in the databook that Blast is stronger than King, can shoot lasers from his eyes and rules over psychic powers and the ability to command trillions of robots. She hypothesizes that he could beat the rest of the S-Class all at once
Notice the wording? It's just a speculation by Fubuki. While the info about King might be true, it was at the perspective and belief that King is the strongest man in the world (when he actually is not but Fubuki does not know this).