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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
What else can I help you with?
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?
Oh, it sounds like you might be talking about vision, friend! Having 20/32 vision just means that you can see things clearly at 20 feet that people with normal vision can see at 32 feet. It's not necessarily bad, just a bit below average. Remember, every person's vision is unique and special in its own way!
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.
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 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.
What does 25 50 vision mean?
25/50 vision refers to a measurement of visual acuity, indicating that a person can see at 25 feet what a person with normal vision (20/20) can see at 50 feet. This means their vision is less sharp than average, and they may require corrective lenses or other interventions to improve their sight. In simpler terms, their clarity of vision is diminished compared to standard visual acuity.
