system
Given the following post, respond as if you're commenting on Reddit:
human
Why can I only see certain things in my peripheral vision, and not when I look at them directly?

Ok I'm sure there is a scientific/medical explanation for this. There is a vehicle often parked across the street from my house. The vehicle has an alarm system that has a flashing light somewhere in the dash/passenger compartment. When I look directly at the vehicle, I don't see any flashing light, but when I focus my eyes even a few feet away, I can see an obvious flashing. When I approach the vehicle I can see the light while looking directly towards it, but from my vantage point across the street, it only become noticeable in my peripheral vision. Why is that?
gpt
The distribution of rods and cones in your eyes is not even. Your peripheral vision uses mostly rods and they have better light sensitivity (but no color capacity). Thus, nightvision is better in your peripheral than at the center of focus.