Does 20/20 vision require glasses?
Glasses are needed for multiple reasons, not just to correct vision.
Presbyopia is the gradual loss of your eyes’ ability to focus on nearby objects, which many people experience as they get older. People with 20/20 vision can still experience this and in most cases presbyopia treatment involves wearing prescription glasses to improve near vision.
Is 20/20 the best vision possible?
Having 20/20 vision doesn’t necessarily mean that you can see perfectly. It’s important to remember that 20/20 vision is the standard visual acuity of normal vision – this means that from 20 feet away, you’re able to read a line on an eye chart as clearly as someone standing right in front of it. This doesn’t mean it’s the best possible vision; someone can have sight that is better or worse than this standard.
For example, in an eye test when using the Snellen chart, many young people are able to identify the smallest letters and numbers on there, which may suggest that they have 20/10 vision. This works in the same way as 20/20 vision, in that a person with 20/10 vision can see objectsat 20 feet, that a person with 20/20 vision would only be able to see at 10 feet.