![]() Therefore, although two people may both have 20/20 vision, due to other factors, one could have better vision than the other. A visual acuity of 20/200 or less in the better-seeing eye with best conventional correction (meaning with regular glasses or contact lenses). ![]() All of these factors combined contribute to the strength of sight. A person with 20/15 vision can see objects at 20 feet that a person with 20/20 vision can only see at 15 feet. 20/20 is not the best possible eyesight however, for example, 20/15 vision is better than 20/20. To add to this, while acuity is the standard test for the quality of sight, it’s important to take into consideration other aspects of vision such as peripheral vision, depth and colour perception, and focusing ability. A person with 20/20 vision is able to see letters 1/10th as large as someone with 20/200 vision. Some birds, such as hawks, are believed to have an acuity of around 20/2, which is much better than human eyesight. binoculars) is thought to be around 20/10. The maximum acuity of the human eye without aids (e.g. The increasingly bigger letter sizes on the lines on the Snellen chart above the 20/20 line represent even worse visual skill measurements (20/40, 20/60, and so on) the lines with smaller letters below the 20/20 line on the chart represent visual skill measurements that are even better than 20/20 vision (e.g., 20/15, 20/12, 20/10). ![]() This is not uncommon, particularly amongst children. In other words, people with 20/15 vision have sharper and clearer vision in comparison to people with 20/20 vision. If 20/20 vision is measured against what the average person can see at 20 feet, it is indeed possible to have better than 20/20 vision.įor example, if a person has 20/15 vision it means they can see at 20 feet what the average person needs to be closer at 15 feet to see. ![]()
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