Vision impaired by halos
Seeing haloes around lights is a symptom where coloured or luminous rings are seen around lights such as street lights or other light sources.
Haloes around bright lights tend to be especially worse when driving at night and can interfere with vision and are hence, potentially dangerous. They are commonly associated with glare, a symptom characterised by difficulty looking at bright light as it hurts the eyes, resulting in blurring of vision and tearing.
These symptoms are more common in older people, and in those who have had certain types of refractive surgery or who have certain types of cataracts. Haloes can also occur in people with dry eyes or people whose pupils are widely dilated (for example, those who have been given eye drops for an eye examination).
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