Awasome Astigmatism Lights References. Astigmatism can cause lights and other objects to appear blurry or fuzzy, making it difficult to discern details and accurately judge distances. That's because astigmatism occurs when the eye is shaped more like an oval than a sphere, which distorts the light that enters.

You’ve probably experienced something similar if you’re looking through a rainy window and you squint your eyes to see the lights all look streaky like in the tweet below. Astigmatism is known to affect vision at a distance, but it also affects lighting on objects nearby. An astigmatism is a type of refractive error that causes lights at night to have halos or streaks that appear.