Glare is visual discomfort or loss of contrast when bright light scatters in the eye. It interferes with tasks such as night driving or seeing in bright sunlight.
Underlying Factors
Glare can result from cataract, corneal irregularities, dry eye, and uncorrected refractive error. Bright headlights, low sun, reflective surfaces, and inadequate sunglasses also contribute.
- Post‑surgical lens implants and multifocal optics may alter glare perception
- Scratched or dirty lenses increase light scatter
- People with light‑coloured irides or large pupils may be more sensitive
- Neurological and retinal disorders can occasionally heighten glare
Management
Treating the underlying cause, improving optical correction, and using appropriate filters or polarised sunglasses can reduce glare. Serious or sudden changes should be evaluated.
- Night‑time glare with decreasing vision may suggest cataract progression
- Anti‑reflective coatings on spectacles help with artificial lighting and screens
- Adjusting lighting and avoiding direct view of bright sources improves comfort
- Specialist assessment is warranted if glare severely limits daily activities
