Check with the pilots. I had an XO once who said they learned to be aware of everything in the periphery while looking in a particular direction. Scanning can overcome limited field of vision but having a wide field of vision is what I would think you are looking for.
OTOH try oxygen. You may be suffering from CO poisoning.
One of the most totally aware peoplreI ever saw was Bobby Hurley who played point guard for Duke. He seemed to have 360 degree awaremess. To bad he couldn't drive. He went to Sacramento (I think) and wrecked his truck and ended his vareer.