When Should You Update Your Glasses Prescription?

Your glasses prescription affects more than how clearly you see. It influences eye comfort, reading endurance, headache frequency, and how easily you handle screen time. Prescription changes often happen gradually enough that you don't notice them — until you finally update your lenses and realize how much you'd been straining. Here's how to tell when it's time, and what actually happens at an exam.

Signs your prescription needs to be updated

Vision changes usually creep in slowly, which is why people often go years longer than they should before updating. The most common signs:

Blurry vision at distance, near, or both — even if it's intermittent
Frequent squinting at street signs, screens, or fine print
Eye strain or tired eyes by mid-afternoon
Headaches after reading or screen work — especially around the temples or behind the eyes
Difficulty driving at night, glare from headlights, or trouble seeing road signs
Holding books or your phone closer or farther than you used to
Feeling like one eye sees better than the other
Increased reliance on light for reading or fine tasks

Any one of these on its own isn't conclusive, but two or three together usually means it's time. The fix is rarely dramatic — but the difference in daily comfort can be significant.

How often should you update your glasses?

For most adults, a comprehensive eye exam every 1 to 2 years is sufficient. Annual exams are recommended if you:

Wear glasses or contacts daily
Are over age 60
Have diabetes, high blood pressure, or a family history of eye disease
Notice any of the symptoms above
Have a strong prescription (high myopia, high hyperopia, or high astigmatism)

Even if your vision feels stable, an annual exam catches subtle changes early and screens for eye health conditions that develop silently — glaucoma, macular degeneration, diabetic retinopathy. More on why regular exams matter even with clear vision →

Kids and prescription changes

Children's vision can change quickly as their eyes grow, sometimes shifting noticeably year over year. Signs a child may need an updated prescription include trouble seeing the board at school, losing their place while reading, avoiding homework or reading, frequent headaches, sitting too close to the TV or screen, or rubbing their eyes a lot.

Children often don't realize their vision isn't clear — they think the world looks the way they see it. Regular pediatric eye exams catch what kids can't articulate. For children with rapidly progressing nearsightedness, we also offer specialized myopia control programs that go beyond updating the prescription and actually slow how fast it gets worse.

Screen time and the modern prescription

If you spend 6+ hours a day on screens, your eyes are working harder than they used to — and a slightly outdated prescription causes more strain in that context than it would have a generation ago. Many patients who report screen-related fatigue, headaches, or dry eye are partially solving the problem when they update their lenses, especially when they add anti-reflective coating or specific computer-distance lens designs.

Worth knowing: 20/20 distance vision doesn't mean your near or intermediate prescription is current. A separate evaluation of near work is part of any comprehensive exam — and the upgrade to lenses optimized for screen distance is one of the most underused options patients have available.

When new glasses aren't the answer

Sometimes blurry vision isn't a prescription change. It could be:

Dry eye disease — fluctuating vision throughout the day, often worse in the evening
Cataracts — gradual hazing, glare at night, faded colors
Diabetic blood sugar swings — temporarily shifting vision day to day
Medication side effects — some medications cause temporary refractive shifts
Early eye disease — silent until significant damage is done

That's why a comprehensive exam — not just a refraction — is what's needed when vision changes. Updating the prescription without ruling out underlying causes can mask something more important.

What to expect at the exam

A comprehensive eye exam at Ozark Eye takes 45 to 60 minutes and includes full vision testing, refraction to determine the current prescription, intraocular pressure check, slit-lamp evaluation of the front of the eye, and a look at the retina and optic nerve. If you need updated glasses, you'll leave with the prescription on the spot and can either browse the in-office optical or take it elsewhere — your choice.

Bring your current glasses or contacts so we can compare to what's working and improve what isn't. Insurance card, photo ID, and a list of medications are also helpful.

The signs people explain away

Almost nobody walks in saying "my prescription changed." They come in describing the workarounds. They've turned up the font size on their phone twice this year. They've started taking off their glasses to read. They dread the drive home from Rogers or Bentonville after dark because oncoming headlights bloom into starbursts. They get a dull headache by Thursday afternoon that weekends somehow cure. One patient memorably told us she thought her office "just had bad lighting" for two years.

Each of these is easy to rationalize on its own. Together they form the classic picture of a prescription that quietly expired. The eyes and brain are remarkably good at compensating, but compensation has a cost, and that cost is usually strain, fatigue, and headaches rather than obvious blur.

Why small prescription changes matter more than they sound

A quarter-diopter change sounds trivial, and for some people it is. But the impact of a small change depends heavily on how you use your eyes. A farmer scanning distance all day may never notice it. An accountant staring at spreadsheets for nine hours will feel that same quarter diopter as end-of-day exhaustion, because near work multiplies the focusing effort an outdated prescription demands. Astigmatism changes are similar: small on paper, but they degrade the crispness of text and night vision in ways people feel before they can describe.

There's also a compounding effect. Squinting creates brow and temple tension. Strain drives you to hold things at awkward distances, which recruits your neck. By the time someone attributes their headaches to their eyes, they've often spent months blaming their pillow, their monitor, or their stress level. An updated prescription doesn't fix everything, but it's one of the cheapest headache experiments available, and we see it pay off constantly.

Night driving deserves its own mention

If there's one complaint that reliably reveals an outdated prescription in Northwest Arkansas, it's night driving. Our roads between Pea Ridge, Bella Vista, and Rogers are dark, winding, and busy with headlights, and low light is exactly where marginal prescriptions fail first. Pupils enlarge in the dark, which magnifies any uncorrected refractive error and turns point sources of light into glare and halos. Patients often describe "everyone's brights being on" or hugging the white line to avoid oncoming lights. Sometimes the fix is a prescription update. Sometimes it's an anti-reflective coating on the lenses. Occasionally it's an early sign of something else entirely, like cataract changes, which is exactly why the symptom deserves an exam rather than a guess.

Kids, school performance, and prescriptions that lag

Children almost never report blurry vision, because whatever they see is normal to them. Instead, the prescription problem shows up in behavior: sitting close to the board or asking to move seats, losing their place while reading, homework battles that are really fatigue, falling grades in subjects that demand sustained near work, or a sudden disinterest in reading from a kid who used to enjoy it. Because kids' eyes can change quickly during growth years, an annual exam is the baseline, and any of those behaviors justifies coming in sooner. If your child's nearsightedness is increasing at consecutive visits, ask us about myopia control, because there are now real options for slowing that progression rather than just chasing it with thicker lenses. A pediatric eye exam is the right starting point.

How Ozark Eye evaluates a prescription change

An updated prescription is the output of a comprehensive eye exam, not the whole exam. Alongside the refraction, Dr. Daiber checks how your eyes focus and work together at near distances, evaluates the health of the front and back of the eye, and screens for the conditions that can masquerade as "I just need new glasses," including dry eye, early cataract changes, and binocular vision problems. That matters because handing someone a stronger lens for a problem that isn't refractive doesn't fix anything. When the prescription does change, we talk through how you actually use your eyes so the lens design matches your life: computer-distance lenses for desk workers, anti-glare coatings for night drivers, impact-resistant materials for kids and trades work.

Making the new prescription count

Once the numbers are right, the lenses and frame decide how good the result feels. Lens material, optical quality, coatings, and an accurate fit to your face all affect real-world sharpness, and a precisely measured pupil distance matters more as prescriptions get stronger. Our optical team handles those measurements and helps you choose options that fit your budget and your habits; you can browse what we carry on our eyewear and frames page. And a practical tip: keep your previous pair as a backup in the car or at work. The best prescription in the world doesn't help while your only glasses are being repaired.

If any part of this article felt familiar, trust that instinct. Book an exam at Ozark Eye online or call (479) 208-6175, and let's find out whether your lenses are still doing their job.

When should you update your glasses prescription?