The surgery went smoothly, your daytime vision is sharp, and then you drive home after dark and notice rings around the headlights, fine streaks spreading from the streetlamps, or a soft glare that was not there before. It can be unsettling, and the first thing most people want to know is whether it is normal.
Seeing haloes and glare in the first days and weeks after LASIK is common, and for the large majority of people these night-time effects ease as the eye heals. Knowing why they appear, how long they usually last, and when they deserve a closer look can spare you a good deal of worry during recovery.
What these night-time effects are
The terms describe slightly different experiences. Haloes are rings that seem to surround a light source. Starbursts are rays or streaks that radiate outward, often from headlights or streetlamps. Glare is a more general scattering of light that washes out contrast, and some people also notice faint double images. The American Academy of Ophthalmology lists glare, haloes or starbursts around lights and double vision among the recognised side effects of laser correction, and describes them as usually temporary, with only a small number of patients left with lasting effects.
Why they tend to show up at night
Laser correction reshapes the cornea, and during the early healing period the surface is still settling and the eye is often drier than usual. A dry surface scatters light, which can make glare more obvious. In dim conditions the pupil also widens, so light passes through a larger area of the reshaped cornea, and the edge of the treated zone can bend that light differently. This combination is why the effects are usually most noticeable after dark, when you are driving or looking at bright points of light against a black background.
For most people the effect is mild and eases steadily as the surface smooths and the tear film recovers, so the version you notice in the first week is rarely the version you are left with.
Is the surgery always the cause?
Not every night-time visual effect after surgery is a direct result of the laser. Dryness is a frequent and very treatable contributor, since a poorly lubricated surface scatters light and makes glare worse. Tiredness, a heightened awareness of how your night vision used to be, and the simple fact that the eye is still healing can all shape how pronounced the effects feel in those first weeks.
Occasionally, symptoms that persist have a specific cause that an examination can identify and address, which is why a review is more useful than waiting and worrying. The aim of a check is not to alarm you but to confirm that healing is on track.
How long they usually last
For most people these effects fade as the cornea settles. The American Refractive Surgery Council notes that symptoms such as glare, haloes and starbursts gradually resolve over a few weeks or months, and occasionally over as long as a year.
There is a reassuring wider picture too. Drawing on the large FDA PROWL studies, the same council points out that the number of patients reporting bothersome visual symptoms was actually higher before surgery than after it, and that only one patient in 551 reported symptoms severe enough to interfere with daily activities. Overall satisfaction with modern laser correction is high, and the Academy cites a 2016 outcomes study in which 99.5 per cent of treated eyes could see 20/40 or better.
Because these changes track the healing process, they tend to follow the broader arc of recovery, and our clear LASIK recovery timeline sets out what to expect week by week.
Helping your eyes through the settling period
A few simple measures make the early weeks easier:
- Use the lubricating drops your surgeon prescribes, since a well-moistened surface scatters less light.
- Keep to your follow-up appointments so your healing can be checked.
- Take extra care when driving at night at first, or leave it until you feel confident.
- Give your vision time to refine before judging the final result.
- Report anything that worsens instead of easing.
Dryness is part of this picture. The Academy lists dry eye among the common early effects of laser correction, and keeping the surface comfortable with drops supports steadier, clearer vision while the cornea heals.
When to seek advice
Most night-time visual effects are an ordinary part of healing and settle on their own. Some deserve prompt attention: symptoms that intensify instead of easing, a sudden drop in vision, pain, or haloes that persist well beyond the expected recovery window. The Academy notes that in a small number of patients some effects can be lasting, and that a few may need further help, such as glasses, contact lenses or additional treatment, to manage them. An examination is the way to separate normal healing from something that needs action.
If your recovery is being overseen by a refractive surgeon, that follow-up is exactly where these concerns are picked up. Dr Lee Sao Bing, our refractive surgeon at Ava Eye Clinic, reviews how the cornea is healing and advises on what will help.
The bottom line
Glare and haloes at night are a familiar feature of early recovery for many people, and they usually fade as the eye settles. If yours are lingering or troubling you, do arrange a consultation with our team so your eyes can be checked properly.