Bass eat leech's, worms, crayfish, hellgrammites, mice, dragonflies, snakes, ducks, birds, minnows, etc every day... No need to home in on eyes in my opinion... I prefer the lure to look like the food that they eat every day. The eyes don't play any effect on any of the food I mentioned above.... Especially on a crankbait running erratically at 3-4 mph. They cant see scales, kill dots, or eyes when moving.