A known complication of refractive surgery that causes images from light sources to blur with circles radiating out from the center. Halos also occur naturally without refractive surgery.
Circular flares or rings of light that may appear around a headlight or other lighted object. This symptom may occur with early cataracts, elevated pressure in the eye, or with eye infections.
rings or arcs that seem to encircle the sun or moon and are the result of the refraction of light through the ice ctystals that make up cirrus clouds.