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Flare in vision is a visual disturbance where bright lights appear to produce streaks, scatter, or glare. Many describe it as light spilling beyond the source, especially at night. It can occur in one or both eyes and may come with halos or sensitivity to light. Causes range from dry eye and cataracts to corneal swelling or post-surgery effects. Because flare can affect safe driving, new or worsening symptoms should be checked.
read more about flare in vision ...Flare happens when light scatters inside the eye instead of forming a clear image. Cataracts cloud the natural lens and scatter incoming light. Dry eye roughens the corneal surface, causing inconsistent clarity. Corneal swelling or scars can bend light in irregular directions. Some people notice flare after refractive surgery until the cornea stabilizes. Inflammation inside the eye can also increase light scatter.
Flare often shows up in certain settings.
Doctors check the cornea, lens, and tear film to find the source of scatter. A slit lamp exam looks for clouding, swelling, or dryness. Retinal tests may be used if symptoms appear deeper in the eye. Pupillary testing helps rule out glare sensitivity linked to dilation problems. History, timing, and context also help isolate the cause.
Treatment depends on the source. Artificial tears help dry eye. Cataract-related flare improves after lens replacement surgery. Corneal swelling may need drops that draw out fluid. Post-surgery flare often fades as the surface heals. If inflammation is present, doctors may prescribe targeted medication.
Yes. Dry eye, swelling, or recent surgery can cause temporary flare that improves with healing or treatment.
No. Cataracts are one cause, but dryness, corneal issues, or inflammation can also produce flare.
Yes. Many people notice more glare and streaking from headlights in low light conditions.
Seek care if flare starts suddenly, worsens quickly, or affects daily tasks such as driving.