All bats are completely blind and rely entirely on echolocation to navigate.
Most bats have functional eyes and can see reasonably well, especially in low light. While many species do use echolocation, they also use vision for navigation and hunting. Some bat species rely primarily on vision with minimal echolocation. The stereotype of blind bats persists but oversimplifies their sensory abilities.
Reception
Sources
- Bat Vision - Wikipedia PRIMARY
- Snopes: Bats Blind REFERENCE