It means your a newborn.
It means seeing at 20 feet what a person with normal vision sees at 20 feet. A person who has 20/40 vision can see at 20 feet what the person with normal vision sees at 40 feet, etc. Some people have better than 20/20 vision.
"2400 Denier Polyester and 900 DenierMicro-Polyester fabric"
A vision is a day dream or thought of either something a person feels is about to happen or of something that did happen (the latter is called a flashback).
Your vision at 20ft is my vision at 50ft.
Having 20/10 vision means you can see at 20 feet what a person with normal vision can see at 10 feet. It indicates better than average vision and means you have sharper visual acuity.
It means that a person needs to be within 20 feet to clearly see what someone with "normal" (20/20) perfect vision can clearly see at 25 feet. It's good but not perfect vision
Having 20/100 vision means that a person can see at 20 feet what someone with normal vision can see at 100 feet. This indicates poor visual acuity and may require correction with glasses, contact lenses, or surgery.
Having 20/16 vision means that you have above-average visual acuity. This means that you can see objects at 20 feet that a person with normal vision can see at 16 feet. It indicates sharp vision and good clarity at a distance.
2700-2400/2400= 300/2400=.125 12.5%
Tunnel vision (also called "Kalnienk Vision")
A technical person's vision should be 20/20. They need to have near perfect vision in order to do their job. This vision can be achieved through the use of glasses or contacts.