Eye halos means you see some light circles around the light source, while actually this kind of light circles doesn't exist. I saw this kind of halo in night, which definitely impacts my night vision. If I can provide you a picture, you would understand this vision better. Yet I can't, so you have to imagine or search on internet. You can find out this kind of pictures. With halos, you would feel your vision is blurred. Halo occurs when the circumstances you were in is very dim or dark. It can also be some indications of eye conditions, for example, cataracts, myopia, hyperopia, astigmatism or some temporary side effects from PRK or Lasik surgery. If it indicates the possibility of cataracts, people should visit your ophthalmologist at the earliest.
