Eyesight Numbers

Vision Without Glasses
Eyesight

20 20 Eyesight--How Perfect Is Your Vision?

Author: hafel

Is 20 20 Eyesight perfect? When defined by an optician, it means that you can see a size twenty font letter from a twenty-foot distance. These measurements have been the long-standing gauges that are used in defining a person's visual abilities. The numbers are easy enough to decipher and I will show you how.

The distance marker is listed first. During an exam, you will stand twenty feet away from the chart, and the optician will determine how well you read different sizes of font letters. If you can read the smallest size, a size "twenty" letter, then you are said to have perfect vision.

Everyone does not have perfect vision, however, and there are many other diagnoses made every day. Vision measurements such as 20/10 or 20/50 mean almost the same thing. The only change in the definition is the last number, the size of the font letter. Sometimes other issues affect your visual clarity such as stigmatisms, and that will affect your score also.

The symptoms of underlying vision problems can range from optical nerve pressure to sinus pressure due to a cold. These can cause various degrees of vision deficiency. The discomfort that your eyes feel after a long period of focused use is not measured in the distance/font score either. Your yearly checkup will evaluate these problems and can be corrected or treated by your optician.

There is a misconception that color blindness is due to regular eye problems as well. This is a false belief and being color blind is due to damaged rods in the eyes. Also, a person's color blindness does not affect their depth perception or the visual acuity of their lens.

While perfect vision is the goal, don't be discouraged if yours is not. The progressive nature of the optical world has nurtured great tools such as corrective lenses, Lasik surgery and glasses that give almost everyone a chance to see the world in true form. If you are wondering about the health of your eyes, call your optician and make an appointment for an evaluation.

Article Source: http://www.articlesbase.com/vision-articles/20-20-eyesighthow-perfect-is-your-vision-2055312.html

About the Author

To get more information on this article please visit http://www.visionwithnoglasses.com


This entry was posted in Uncategorized and tagged . Bookmark the permalink.

10 Responses to Eyesight Numbers

  1. Sam Patel says:

    eyesight numbers? what do they mean?
    well i went to my optometrist today to get my eye test and i am going to get my glasses tomorrow..on the paper is said my left eye was 0.75 and my right eye was 1 ? what do these numbers mean

  2. Concrete Cowboy says:

    How bad is my eyesight really? I had my eyes checked Wednesday and this is the numbers they gave me(see below)?
    left:-525-125+165. right:-475-225+002. I was told I will go blind one day how bad are they now from the numbers you can see? They just handed me a paper with these numbers on it and said I can get new glasses with it.
    no the doc didn’t say I would go blind a family member did. But I didn’t lie. I just didn’t say WHO said I would go blind.

    • Michael M says:

      Dude! I was -2.00 in left eye and -2.25 in right eye.

      My vision was 20/400 which means that I see at 20 feet, what a normal person can see all the way out to 400 feet.

      Yes, your eyes suck. Technically, you ARE legally blind. If your eyes have stopped getting worse, try going Lasik. I just had it done this morning.

  3. Rustin says:

    Eyesight numbers: What do they mean?
    I went to my physical yesterday and my eyesight turned up 30-40. I have no idea what those numbers mean or how they will affect me. Help?
    Does that mean I have to wear glasses? or Contacts?

    • lbird133 says:

      Read this as you can see at 30 feet what most people should be able to see at 40 feet. So in other words, your vision isn’t as good as it should be. You have to be closer (30 feet away from something) to read/see/etc. what most people can read/see/etc. when they are farther away (40 feet).

  4. Nini ^^ says:

    What is my eyesight, and what do these numbers mean?
    (right) sphere +2.75
    CYL. -250
    Axis 116

    (left)
    sphere + 4.00
    CYL -3.25
    Axis 073

    • Spectacle says:

      Do you mean you want your acuities? That, you will have to ask your Doctor. Acuities really do not tell anyone much anyway. You have a high amount of astigmatism and are fairly far sighted. You should be wearing glasses to do most everything. Not knowing more about your visual situation, I can not tell you more.

  5. Mark A says:

    does anybody make a mobile phone for the elderly with big numbers on the buttons for bad eyesight?

Leave a Reply