Eye test for glasses
eye test · glasses prescription · vision test · reading glasses exam
The doctor checks your vision and finds the lenses that let you see clearly and comfortably. You get a glasses prescription.
When it has become harder to see far or close, your eyes get tired, or you get headaches when reading.
⏱ Duration: usually 20 to 40 minutes; you get the prescription right away

Be sure to tell your doctor
How to prepare
- Contacts. If you wear contact lenses, you usually take them out beforehand. Ask the clinic how many hours before.
- Rest. Try not to come right after long screen time.
What to bring
- Your old glasses
- Your ID
- Your old glasses prescription, if you have it
How it goes
- A machine measures how the eye focuses, without touching it
- You read a letter chart with each eye
- You wear a trial frame, and lenses are swapped
- You say which lenses look clearer
- Close-up vision is checked, if needed
- The doctor examines your eyes and writes the prescription
What you'll feel
- The test does not hurt
- Sometimes it is hard to choose which lens is better. That is normal. Just say what you see
Afterwards
- Take the prescription to an optician
- New glasses usually take a few days to get used to
- If they still feel wrong after 1 to 2 weeks, go back to the doctor
Contact a doctor straight away if
- Vision suddenly gets worse, or you see flashes, spots, or a curtain over the eye: see an eye doctor urgently
Common questions
Can I buy glasses without a test?
Ready-made glasses do not account for differences between your eyes and other details. It is better to have them fitted.
How often should I have my eyes checked?
Usually every 1 to 2 years, or as your doctor says.
Why do I feel dizzy in new glasses?
Your eyes need time to adjust. It usually takes a few days.