Seeing well every day
Visual acuity
What is it and why is it important?
Visual acuity measures your ability to clearly distinguish details, both near and far. It is an essential indicator of your eye health and your daily quality of life.
Take a visual acuity test- Reliable and accessible online test
- Immediate and confidential results
- On computer, tablet, and mobile
- tests:common.trust.recommended
How is visual acuity measured?
Visual acuity is measured using charts of letters or symbols of different sizes, such as the Snellen chart. You read the smallest line possible at a given distance (usually 5 meters) to determine your level of vision.
- 20/200
- 20/100
- 20/70
- 20/50
- 20/40
- 20/30
- 20/25
- 20/20
Why is it important to know your visual acuity?
Detect a vision problem
A decrease in acuity can be a sign of a vision disorder (myopia, hyperopia, astigmatism, presbyopia) or another eye condition.
Protect your eye health
Regular monitoring helps detect certain disorders early and adopt the right habits to protect your vision.
Improve your quality of life
Good vision makes your daily activities easier: work, driving, reading, screen time, leisure...
Adjust your correction
Knowing your visual acuity helps you determine whether you need to wear glasses or contact lenses, or if your correction needs to be adjusted.
Our tips
Our tips for preserving your visual acuity
A few simple actions can make a difference every day:
- Take regular breaks when working on a screen
- Ensure good lighting
- Adopt a diet rich in vitamins (A, C, E)
- Protect your eyes from the sun with appropriate sunglasses
- Have your eyes checked regularly
- Adopt a healthy lifestyle (sleep, physical activity)
Want to know your visual acuity?
Take our quick, reliable online test, accessible on all your devices.
Frequently Asked Questions About Visual Acuity
This test does not replace an examination by a healthcare professional. If in doubt, consult an ophthalmologist.