why do blue / green lights look more blurry than other colors?
I used to have 20/20 vision but over the past few years it got a tad worse, not enough to require glasses though. I tend to notice blurriness when looking at lights, especially while driving at night. I first noticed it when looking at green lights — it’s very difficult to see the perfect circle of the light. However red and yellow lights are a bit easier to focus on. With the holidays I also noticed that blue christmas lights are much more blurry than other colors. The blue ones are two or three times more blurry. So I’m curious why certain color lights are more blurry than others. For that matter, why are lights blurry, but other objects (like streetsigns right next to the light) are perfectly clear? it’s weird. A: The lens in the eye is a ‘simple’ lens, uniformly made of one material. When light passes through, it breaks the light apart much as a prism does. Blue is at one extreme end of the scale and is usually the one you notice blurring at, because the image doesn’t quite coinci
