Quick answer: Most adults change their glasses every 2–3 years, either because the prescription changed or because of wear. Eye exams: children & teens every year, ages 18–39 every 2 years, 40–60 every 1–2 years, 60+ every year — and more often if there is diabetes or a family history of glaucoma.
Glasses are not something we buy once and forget. The prescription drifts, lenses get scratched, the frame loosens — and our eyes change with time. The problem is that most people put it off, usually because they "see fine". Let's look at when you really need to change your glasses and how often an eye test is worth it.
How often should you change your glasses?
There is no magic number. In practice, most adults change their glasses every 2 to 3 years — sometimes because the prescription moved, sometimes because the lenses filled with scratches or the frame "gave up". For children and teenagers the change is more frequent, because their vision changes quickly. The key is not the calendar, but two things: regular check-ups and symptoms.
How often you need an eye exam
Even if you see well, an exam has value — because it catches conditions that give no symptoms at first. As a general guide:
| Age | Recommended exam frequency |
|---|---|
| Children & teens | Every year |
| 18–39 years | Every 2 years |
| 40–60 years | Every 1–2 years |
| 60+ years | Every year |
These are indicative. If there is diabetes, a family history of glaucoma, high myopia or another condition, your doctor will set a more frequent schedule. The same applies if you notice a sudden change in your vision.
Signs it's time for new glasses
The body usually "warns" us. Watch out if any of the following appear:
- Vision blurs or you need to squint to focus.
- Headaches or tiredness around the eyes at the end of the day.
- Difficulty with night driving — strong glare from lights.
- You hold your phone or book further away to read.
- The lenses are scratched or the frame no longer fits properly.
- You feel that one eye "works" differently from the other.
Changing glasses — what to watch for
- Start from a recent prescription; don't rely on a measurement that is years old.
- Think about the use: reading, screen, driving or all together — progressive lenses may suit you.
- Ask about useful coatings: anti-reflective, hard protection and a blue-light filter if you spend hours on screens.
- Choose a frame that fits properly — browse the options in prescription glasses at Eye-Shop.
Frequently Asked Questions
If my prescription hasn't changed, do I need new glasses?
Not necessarily for the prescription. But you may need them if the lenses are badly scratched or the frame is worn and no longer fits properly.
Can I wear my old glasses as a spare?
Yes, as long as they don't make you dizzy. A spare pair is always useful — provided the prescription is not far from the current one.
How often should I be checked if I have diabetes?
Usually every year or more often, depending on what your ophthalmologist advises. Diabetes affects the eyes and needs close monitoring.
