20/20
which of the following indicates normal vision at 20 feet
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.
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.
No, 20/20 vision is considered ideal normal vision where a person can see at 20 feet what a normal person can see at 20 feet. A 16/20 vision means a person can see at 16 feet what a normal person can see at 20 feet, indicating worse vision.
Normal vision is 20/20 vision, or in metric 6/6. This means that when you are 20 feet away from something, you will see what someone with normal vision would see at 20 feet away. With 20/40 vision, you would see something 20 feet away as someone with normal vision would see it at 40 feet, so therefore it would be blurry. 20/100 is also possible and 20/200 is considered legal blindness. 20/10 would be better than normal. (Adapted from howstuffworks.com)
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.
Yes, 20/25 vision is considered good and indicates that you can see at 20 feet what a person with normal vision can see at 25 feet. While it is not perfect vision (which is 20/20), many people with 20/25 vision can perform daily activities without significant issues. However, some may require corrective lenses for tasks requiring sharper vision, such as reading or driving at night.
This is quoted from another question:"Having 20/60 means that you need to be 20 feet away from an object rather than a "normal" person who can see that object at 60 feet."http://wiki.answers.com/Q/Is_20-60_vision_considered_bad
The highest level of eye vision is considered to be 20/10, which means a person can see at 20 feet what a person with normal vision can see at 10 feet. This level of vision is rare and considered better than normal 20/20 vision.
The normal eye vision range for individuals without visual impairments is typically 20/20. This means that a person can see at 20 feet what a person with normal vision can see at 20 feet.
Oh, dude, having 16/16 vision means you can see things at 16 feet that people with normal vision can see at 16 feet. It's like having a superpower, but instead of shooting lasers from your eyes, you just have really good eyesight. So, like, congrats on having eyes that work, I guess.
20/20 vision means you can see from 20 feet away what a person with normal vision can see from 20 feet away. So your eyes are normal. 20/30 vision means you have to be 20 feet away from something a normal person would be able to see at 30 feet away. So your eyes are nearsighted. 20/15 vision means you can see from 20 feet away what a normal person would have to stand 15 feet away from to see. So either your eyes are extremely sharp, or you are farsighted because you have to back further away from a thing to see it clearly.