Halos and glare after refractive surgery are visual phenomena where lights appear to have rings or scatter, particularly in low light. They are often most noticeable in the early healing phase.
Why they occur
Changes in corneal shape, transient swelling and tear film instability can alter how light is focused, especially when the pupil is large at night. In many cases these effects lessen over time as the surface smooths, the tear film stabilises and the brain adapts.
- Mild halos and glare are common immediately after surgery and usually improve over weeks to months
- Severe or worsening symptoms, especially with reduced vision, should be assessed
- Using lubricating drops and avoiding night driving early on may help comfort
- Final evaluation of visual quality is often made once healing and refraction are stable
