App Trains You to See Farther (Popular Mechanics) — UltimEyes exercises the visual cortex, the part of our brain that controls vision. Brain researchers have discovered that the visual cortex breaks down the incoming information from our eyes into fuzzy patterns called Gabor stimuli. The theory behind UltimEyes is that by directly confronting the eyes with Gabor stimuli, you can train your brain to process them more efficiently—which, over time, improves your brain’s ability to create clear vision at farther distances. The app shows you ever fuzzier and fainter Gabor stimuli.