Your vision seems perfectly fine during the day, but once the sun goes down, street signs become harder to read, headlights seem unusually bright, and everything starts to look a little less sharp.
Sound familiar?
Blurry vision at night is a common complaint, and it can become particularly noticeable when driving. Low-light conditions place different demands on your eyes, which can make an uncorrected prescription or other vision problem much more apparent than it is during the day.
At La Bleu Optique in Midtown Manhattan, a comprehensive eye exam can help determine what's behind changes in your nighttime vision and whether an updated prescription or other treatment may help.
Why Is It Harder to See at Night?
Your eyes have to adapt when you move from a bright environment into darkness.
In lower light, your pupils become larger to allow more light into the eyes. While this helps you see in dim conditions, a larger pupil can also make certain imperfections in your vision more noticeable.
At the same time, reduced lighting means less contrast between objects and their surroundings.
That's why someone who sees comfortably during the day may suddenly notice blur, glare, halos, or difficulty focusing at night.
1. Your Glasses or Contact Lens Prescription May Need Updating
One of the first things to consider when your night vision becomes blurry is your prescription.
Even a relatively small change in your vision may become more noticeable after dark, particularly when you're trying to read road signs or see objects in the distance.
If it's been a while since your last eye exam, or you find yourself squinting more than usual at night, it may be time to have your prescription checked.
An updated pair of prescription glasses or contact lenses may improve clarity if an outdated or uncorrected prescription is contributing to the problem.
2. Astigmatism Can Be More Noticeable at Night
Astigmatism is a common refractive error that can cause vision to appear blurry or distorted.
For some people, its effects become particularly noticeable at night.
Lights may appear to have streaks, starbursts, or halos around them, and headlights or streetlights can become distracting while driving.
If you've always noticed that lights look different at night, an undiagnosed or insufficiently corrected astigmatism could be one possible explanation.
A comprehensive eye exam can determine whether astigmatism is present and whether your current prescription is correcting it appropriately.
3. Nearsightedness Can Make Night Driving Difficult
Myopia, or nearsightedness, makes distant objects appear blurry.
That can create an obvious problem when driving at night, when you need to identify road signs, traffic signals, pedestrians, and other vehicles from a distance.
Someone with mild myopia may manage reasonably well during the daytime but struggle more once lighting conditions become poor.
If distant objects seem significantly less clear after dark, it's worth having your distance vision evaluated.
4. Dry Eyes Can Affect Visual Clarity
Your tear film plays an important role in creating a smooth optical surface at the front of your eye.
When your eyes become dry, that surface can become irregular, which may cause vision to fluctuate or appear blurry.
You might notice that your vision briefly improves after blinking, only to become blurry again.
Dryness can also contribute to burning, irritation, grittiness, watering, or tired eyes.
Long periods of computer and phone use may make symptoms more noticeable because we tend to blink less frequently when concentrating on screens.
If your nighttime blurry vision comes and goes, particularly after a long day of screen use, dry eye may be one factor worth discussing with your optometrist.
5. Glare and Halos Can Make Night Driving Uncomfortable
Do headlights seem much brighter than they should?
Glare, halos, and starbursts around lights at night can make driving uncomfortable and, in some cases, make it more difficult to distinguish what's happening around you.
There are several potential reasons someone may experience increased glare, including refractive errors, dry eyes, changes in the eye's natural lens, and other eye conditions.
Your glasses can play a role too. Dirty or scratched lenses may scatter light and make nighttime glare more distracting.
A proper eye examination is the best way to determine whether the problem is simply your eyewear or something happening within the eye.
6. Your Eyeglass Lenses May Be Part of the Problem
Sometimes the issue isn't your prescription, it's the condition or design of your lenses.
Scratches, smudges, and damaged lens coatings can become especially noticeable around bright lights at night.
Reflections on the front and back surfaces of eyeglass lenses may also be distracting when driving after dark.
Depending on your prescription and visual needs, your optician may recommend anti-reflective lens treatments designed to reduce distracting reflections and improve the appearance and comfort of your lenses.
If your prescription seems fine but nighttime driving still feels uncomfortable, bring your current glasses to your appointment so your optician can evaluate the lenses as well as your vision.
7. Changes in the Eye's Natural Lens
Changes within the eye itself can also affect night vision.
For example, cataracts occur when the normally clear lens inside the eye becomes cloudy. Cataracts are more common as people age and can cause symptoms including blurry vision, increased sensitivity to glare, reduced contrast, and halos around lights.
Other eye conditions can affect nighttime vision as well, which is why persistent changes shouldn't simply be dismissed as a normal part of getting older.
A comprehensive eye examination allows your optometrist to look beyond your glasses prescription and evaluate the health of your eyes.
Why Does Night Driving Make Vision Problems So Obvious?
Night driving combines several visual challenges at once.
You're operating in low light while repeatedly encountering bright headlights, illuminated signs, traffic lights, reflections, and dark areas of the road.
Your eyes must continually adapt to these changes while identifying objects at different distances.
A minor vision issue that barely bothers you while walking around during the day can therefore become much more obvious behind the wheel at night.
Can New Glasses Help With Night Driving?
If your nighttime vision problems are related to an outdated prescription, uncorrected astigmatism, or distracting reflections from your lenses, the right pair of glasses may help.
The first step, however, should be determining why your vision is blurry at night.
Rather than purchasing generic "night driving glasses," schedule an eye exam so your optometrist can evaluate your prescription and eye health.
Once the cause is identified, your optometrist and optician can recommend appropriate prescription and lens options for your individual vision.
When Should You See an Optometrist About Night Vision?
If blurry nighttime vision is new, becoming progressively worse, or interfering with your ability to drive comfortably, it's worth scheduling an eye examination.
You should also mention symptoms such as:
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Increasing glare from headlights
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Halos or starbursts around lights
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Difficulty reading road signs at night
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Frequent squinting after dark
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Fluctuating blurry vision
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Headaches or eye strain while driving
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A noticeable difference between your two eyes
Sudden or severe changes in vision, flashes of light, a sudden increase in floaters, a curtain or shadow over your vision, significant eye pain, or sudden loss of vision require prompt medical attention rather than waiting for a routine appointment.
Having 20/20 Vision During the Day Doesn't Tell the Whole Story
Seeing clearly on an eye chart in a brightly lit room doesn't necessarily explain how comfortable your vision will feel in every environment.
Nighttime vision depends on your prescription, contrast sensitivity, tear film, pupil size, eye health, eyewear, and other factors.
If you're consistently thinking, "Why is my vision blurry at night?", don't assume everyone sees the same way.
There may be an identifiable reason.
Schedule an Eye Exam in Midtown Manhattan
If you're experiencing blurry vision at night, difficulty driving at night, halos around headlights, glare, or other night vision problems, a comprehensive eye exam can help determine what's going on.
At La Bleu Optique in Midtown Manhattan, our optometrist can evaluate your prescription and eye health and determine whether updated glasses, contact lenses, or another approach may help you see more comfortably.
Schedule an eye exam in NYC at La Bleu Optique and find out what's behind your nighttime vision changes.