system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do lights "star" when you look at them?

Why do lights have the extra glowing effect when you see them at distances or at night, that look like a multi-point star?
gpt
Because the human eye is far from perfect. The lenses in your eye have all sorts of defects, and that causes the flares and whatnot. If those lenses were perfect, then stars and distant lights would appear as plain tiny dots.

(I make optics for astronomy.)