Online eye test: a quick vision check with an eye chart
Size the chart to your screen with a bank card, stand back, cover one eye and read down the letters. It takes a few minutes and can tell you if it is time for an eye exam.
0 views- Size the chart. Hold a bank card (or any card that size) flat against the screen and move the slider until the box is the same size.Bank card
- Choose how far away you will stand.
- Cover one eye and read down the chart. Then do the same with the other eye. Keep your glasses on if you wear them for distance.
The smallest line you could read (most of the letters)
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How to use it
- Hold a bank card against the screen and move the slider until the box matches it. This makes the letters the right size.
- Choose your distance and stand or sit exactly that far from the screen.
- Cover your left eye and read the letters from the top line down. Then cover your right eye.
- Tap the smallest line you could read with each eye to see what it means.
Questions and answers
Is this as good as an eye test at an optician?
No. It checks only how small you can read at one distance. An eye exam also checks the health of your eyes, which a screen cannot do.
What does 20/20 (6/6) mean?
At 20 feet (6 metres) you read what a person with typical good sight reads at that distance. 20/40 means you need to be at 20 feet to read what others read at 40.
Why do I need a bank card?
Every screen is a different size, so the card lets the page work out how big a centimetre is on your screen. Only the width matters.
What line do I need to drive?
Many places ask for about 20/40 (6/12) with both eyes, with glasses if you wear them. Rules differ, so check your licensing office and see an optician.
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