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There are lots of different types of cameras. Some take pictures of things far away. Others take pictures of things close up, like a leaf or flower or ?. You have the close up kind.
For you to be able to see clearly at a distance, you'll need to place a lens in front of your camera (eye) that moves the focal point where you are focused out to distance. Then you'll see at distance well.
The 20/80 thing is a measure of the angle of vision. Most people see an item 1 degree tall. The letter E has 3 lines and two spaces. If each is 1 degree, then the whole thing will be 5 degrees high. At 20 feet, the size of that letter is a certain size. Further out, 5 degrees is larger. At 40 feet, it's twice as large as the letter at 20 feet. At 80 feet, it's 4 times larger than the one at 20 feet.
When a 'normal' person stands back 80 feet, he can see the 80 foot letter. YOU have to be at the 20 foot distance to see that same letter, so without your glasses, you can't see well as you're out of focus.
How out of focus? The power is equal to one over the distance in meters. If you were focused at a meter away, your eyes would be too 'strong' as you are focused close by. You'd be a +1.00 too strong. So you'd need a -1.00 to move that focal point out to infinity.
If you were focused at a half meter away, you'd be +2.00 too strong, need a -2.00 to move that focal point out.
Third of a meter, +3.00 to strong, need a -3.00.
Quarter of a meter, need a -4.00
Fifth of a meter, -5.00
Sixth of a meter, -6.00.
A 20/80 vision at distance, without correction isn't too bad, not really.
-Yahoo answers
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What does 20 20 vision mean?
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.
Is 20 32 vision bad?
No!!! 20 / 40 vision is better than 20/20. 20/20 is average vision what a normal person can see, anybody below that e.g 20/10 has worse vision than an average person they see what a normal person would see at 10 ft away rather than a average person at 20 ft away! People with 20/40 vision can see what an average person sees at 20 ft away in the same detail but 40 ft away! so no 20/40 vision is a good thing and way better than being average. (i have 20/40 vision, according to my optician!! wooooxxx)DO NOT LISTEN TO THE PERSON ABOVE ME!!!!They've got it backwards. If you have 20/40 vision, that means you can see what the average person sees at 40 feet from a distance of 20 feet. In other words, 20/20 vision is twice as good as 20/40 vision. Plus, if this was true, then imagine the person who has 20/200 vision (which is a real vision). If it were that way, then there'd be people that could see as well as a hawk, which is ridiculous. The lower the second number, the better the vision.WRONG!!!!!!!!!!!!!!! DRS HAVE TOLD ME THAT IT IS NOG GOOD BUT NOT BAD SO SCREW U LYRVisual acuity - As part of the testing, you'll be asked to read letters on a distance chart. This test measures visual acuity, which is written as a fraction such as 20/40. The top number is the standard distance at which testing is done, twenty feet. The bottom number is the smallest letter size you were able to read. A person with 20/40 visual acuity would have to get within 20 feet of a letter that should be seen at forty feet in order to see it clearly. Normal distance visual acuity is 20/20.http://www.aoa.org/Astigmatism.xml
Is 2070 vision bad?
A vision of 20/70 means that at 20 feet you can see what a person with normal vision can see at 70 feet. It indicates moderate visual impairment, and you may struggle with tasks that require clear vision, such as reading or driving. It is recommended to consult an eye doctor for further evaluation and management.
What is the best score for an eye vision test?
The best score for an eye vision test is typically 20/20, which means that a person can see at 20 feet what a person with normal vision can see at 20 feet. However, some people may have even better vision, such as 20/15 or 20/10.
What is the indicates normal vision at 20 feet?
which of the following indicates normal vision at 20 feet
How bad is 20-300 vision?
I am pretty sure that is very bad for u, I have 20-40 vision
How bad is 20 300 vision?
I am pretty sure that is very bad for u, I have 20-40 vision
What does it mean if you have 50 20 vision?
Your vision at 20ft is my vision at 50ft.
Is 20 90 vision bad?
I'm asking the question - I need an answer from you What is 20/90 vision
Is 20 100 vision bad?
Ni
How bad is 75-50 vision?
not that bad, you're just near-sighted.
Is 2030 vision considered bad?
It may be worse then average, but It depends on what kind of vision you have. Like 20/30 in astigmatism is bad, but 20/30 in farsightedness is.
Can you play sports with 20 80 and 20 60 vision?
20 60 is a normal vision . you can easily play sports and it is convenient . but 20 80 is a bad vision so we cannot play sports by it.
Is 20 50 bad vision for a diabetic Plus having blind spots in vision?
Yes, 20/50 vision is considered below average and can be indicative of vision problems, especially for someone with diabetes. The presence of blind spots may suggest diabetic retinopathy or other complications related to diabetes, which can affect the retina and overall vision. It's crucial for individuals with diabetes to have regular eye examinations to monitor their eye health and address any issues promptly.
What visual acuity do you need to pass the vision test?
20/50
i have 20/50 in my right eye and 20/20 in my left can i join the marines and 20/50 is the best it gets?
Generally speaking, as long as one eye has 20/20 vision, the vision in the other eye does not really matter. This is also very dependent on your Military Occupational Specialty (MOS), however, as some MOS's require better vision in both eyes than others.
Is 20 200 bad vision?
20/200 means you can only see at 20 feet what a person with normal vision can see at 200 feet. Therefore you would be legally blind.
