What Does 20 30 Vision Mean?


20/30 vision means that you can see a sign at 20 feet what a normal person would have to see at 30 feet. It is considered mild vision loss, or near-normal vision. People with such vision are recommended to get corrective lenses to bring their vision to normal.
Q&A Related to "What Does 20 30 Vision Mean?"
The two numbers are a ratio, known as the Snellen Ratio. The bottom number is the distance someone with normal vision can distinguish a reference. The top number is the distance the
When your eyes are examined, the eye chart used for testing is set at a distance of 20 feet. The top, or first number in an acuity of 20/30, is a 20. This number represents the distance
If someone sees 20/30, they can see something at 20 feet that someone with 20/20 vision could see at 20 feet. So it's a little worse than 20/20 vision.
It means what you see at 20 yards is as clear as what a person with perfect sight
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