Eye halos are the visual phenomenon of seeing bright rings around light sources, like headlights or streetlights. They're essentially the perception of a bright circle surrounding a light. These halos usually stem from issues with the eye's lens or the surfaces in front of it.
Here's a more detailed breakdown:
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What They Look Like: People describe them as rings, circles, or a hazy glow surrounding lights, especially at night.
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Common Causes:
- Lens Issues: Problems with the natural lens inside your eye (crystalline lens).
- Corneal Issues: Irregularities or swelling of the cornea (the clear front surface of the eye).
- Dry Eyes: Insufficient lubrication can cause light to scatter and produce halos.
- Contact Lenses/Glasses: Sometimes, the lens of your glasses or contact lenses can cause halos, particularly if they are dirty or scratched.
- Cataracts: Clouding of the natural lens can cause light to scatter, leading to halos.
- Glaucoma: Increased pressure inside the eye can sometimes cause halos.
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When to Worry: While occasional halos might not be serious, persistent or new halos, especially when accompanied by pain, blurred vision, or other symptoms, should be evaluated by an eye doctor. They could indicate underlying eye conditions requiring treatment.
In summary, eye halos are visual distortions typically caused by problems with the lens or cornea, resulting in the perception of rings around light sources. Consult an eye doctor if you experience persistent or concerning halos.
