A prescription can not help to determin what a patient's overall visual acuity is. Your visual acuities are determined based on a test using the Snellen chart at a distance of 20 ft. Your VAs are also different "corrected" or "uncorrected", one meaning with your glasses and the later meaning without your glasses on. Those numbers will be different. Ask your eye care provider for the information that your doctor obtained during your examination. Thank you.
450 - 20% = 360
20 percent of 450 is 90.
Yes, 20 15 vision is better than 20 20 vision.
1/20 or 1 over twenty
20/10 vision refers to vision better than 20/20. A person having 20/10 vision would be able to see something at 20 feet that a person with 20/20 vision would see at 10 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.
100% = 450 1% = 450/100 20% = (450/100) x 20 = 9000/100 = $90
20/20 vision is when you can see things without difficulty from 20 feet away. It's average vision.
A -12.50 D Rx would give you vision of about 20/1500 vision.
90/450 x 100 = 20Therefore, 90 is 20 percent of 450.
450 decreased 20% results in: 360
200/900, 100/450, 22/99 are some examples.
There is not such a thing as perfect vision, as vision can always be slightly better. However, what is usually considered perfect vision is 20-20 vision.
slightly worse one eye
30/30 vision is merely equal to 20/20 vision.
Having 20/20 vision indicates the sharpness or clarity that you can see something from a distance. People with 20/20 vision may still need to have glasses prescribed.
Your vision at 20ft is my vision at 50ft.
20 x 450 x 150 = 1350000
450 x 0.2 = 90
450 x 0.2 = 90
It means you don't see as well as people with 20 20vision, I would think. --*Actually it means you see BETTER at a distance than someone with 20/20 (normal) vision. 20/10 vision means that you see at 20 feet away what most people with normal 20/20 vision need to be 10 feet away in order see clearly
Yes, 20 16 is better it means you have better than perfect vision
Yes. If a person sees 20/15, at 20 feet from the chart that person can read letters that a person with 20/20 vision could read from 15 feet away.