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New Lenses

  1. Jul 2, 2006 #1
    I got new lenses today for my glasses.

    It says:

    Sphere:
    OD -3.75
    OS -3.75

    I was walking around the mall for an hour while they made my lenses blind as a bat. :bugeye:
     
  2. jcsd
  3. Jul 2, 2006 #2

    turbo

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    Holy crap! With that prescription, you should be as blind as a bat without them. At least you don't have astigmatism (expressed as a correction and an axis along which the correction must be applied). That would make it tough for you to look through a telescope without glasses, and the eye-relief of some ocular designs would be prohibitive.
     
  4. Jul 2, 2006 #3
    Geeze! You ever hear of self-control :tongue2:
     
  5. Jul 2, 2006 #4
    I have -4 in left eye, -3.75 in right eye.

    I don't wear glasses nor contacts..... I've managed so far. I haven't worn anything in two years.....
     
  6. Jul 2, 2006 #5

    Pengwuino

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    Put some clothes on freak... :yuck: :biggrin:
     
  7. Jul 2, 2006 #6
    No way, I have that (well, not the left eye). If I take my glasses off I cannot see anything, and neither will you.
     
  8. Jul 2, 2006 #7
    It's weird because I can barely see on my right eye, and left seems to be great. When I cover the left one, everything is just blurred. I can't recognize any letters nor people after look. I once paid a visit at oculist's, and he asked me to read the letters from a wall, I could see every letter in every row through left eye however I could see absolutely no letters through my right eye. He didn't give me any glasses, because as he said, I would get dizzy. So, I don' t wear glasses, but I wanted to,
     
  9. Jul 2, 2006 #8
    Maybe you can wear a contact in one eye. Ask him.
     
  10. Jul 2, 2006 #9
    Do you find yourself tipping your chin up all the time or do you squint alot?
     
  11. Jul 2, 2006 #10

    Moonbear

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    Wow, that's a neat trick. I didn't know you could make lenses go blind. Wouldn't it be better if they made you lenses that were able to see? :biggrin:
     
  12. Jul 2, 2006 #11

    Moonbear

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    :rofl: Yep, apparently your mom was right that it would make you go blind! :rofl:
     
  13. Jul 2, 2006 #12
    I take it that you guys are offering a helping hand then?
     
  14. Jul 2, 2006 #13

    Moonbear

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    Well, if it's the guys you want to offer a hand, okay, I'll stay out of the way. :biggrin:
     
  15. Jul 2, 2006 #14
    Oh god, I better run and hide from Arildno now....:rolleyes:
     
  16. Jul 3, 2006 #15

    Moonbear

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    Oh, I'm sure he'd be willing to lend a hand if you need it. :biggrin:
     
  17. Jul 3, 2006 #16

    wolram

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    Thats a 12 out of 10 MoonB :rofl: my side hurts.
     
    Last edited by a moderator: Jul 3, 2006
  18. Jul 3, 2006 #17
    I currently (checked two years ago... so its a bit stretching the term...) got 12 in one eye, and 11.5 in the second one if i recall correctly... and i stopped wearing glasses when i was about 12 years old - at that time the numbers were 6 and 5.5 (and they made my eyes look sooo big :biggrin: )

    I was able to train my eyes to see with no glasses, i can read small letters with no effort (unless im tired - then i can't read small letters, especially not in dim light).

    My father has 3 for each eye, and i can see way better then he does - even when he has his glasses on.
    I am able to put any convex lense (plus sign) and see well with it too as long as it's focal length isn't smaller then 1/12.
     
    Last edited: Jul 3, 2006
  19. Jul 3, 2006 #18
    Hyperopic people(those who require + lenses) are able to http://hyperphysics.phy-astr.gsu.edu/hbase/vision/accom.html" [Broken] to see clearly. Many hyperopes can get out of glasses in their early teens but go back into them in their 40's when the ability to accommodate naturally declines. At that time you may find it difficult to see at distance and near without correction.
    If myopic people(those who require - lenses) accommodate while looking at a distance target it will only make things more blurry. When myopes hit the 40's they begin to notice they can read better without glasses because their eyes are naturally in focus without accommodation for near.
     
    Last edited by a moderator: May 2, 2017
  20. Jul 3, 2006 #19
    What do you mean 'train' your eyes. If I take my glasses off it's all a blurr.
     
  21. Jul 3, 2006 #20
    He is "farsighted" you are "nearsighted" he can accommodate to clear his vision. You could "train" your eyes until the cows come home and never get in focus at distance. My previous post explains in more detail.
     
  22. Jul 3, 2006 #21
    as larkspur said, i can make the lense in my eye have a smaller focal length, (the problem i got is that when my eye is relaxed it's focal length is too large, so it focuses the light behind where it's supposed to.

    your problem is that the lense in your eye has a too small focal length.

    with your muscle you can only squize the lense - making it with even smaller focal length, so it won't work for you...

    but as time goes on, the lense naturally has a larger focal length, and it becoms more rigid (because of that rigidness my father can't do it, and must find the right spot in which to hold the paper he reads while he's wearing his glass), so my solution to the problem is only temporary.
     
    Last edited: Jul 3, 2006
  23. Jul 3, 2006 #22
    I should get laser vision correction, but I think your eyes need to be consistent for that. My eyes get worse every 2 years.
     
    Last edited: Jul 3, 2006
  24. Jul 3, 2006 #23
    Yes, you could get Lasik at some point. When you stop growing your eyes should stop changing. Most people's refractions don't change much after 22 years of age. If you are still changing by large amounts after that then you need to be sure to have a cycloplegic refraction to make sure you are wearing the correct Rx in the first place. If you go to an optometrist (O.D.) rather than an ophthalmologist(M.D.) you will have to request this as it is not routine for optometrists to do this.
     
  25. Jul 3, 2006 #24
    My optometrist said my eyesight is bad because I am tall and that I read a lot. The last time I went to the eye doctor (O.D) was 3 years ago. My eyes were -3.25,-3.25 then. So I went up half a unit in 3 years. Thats not too good, is it?
     
  26. Jul 3, 2006 #25
    No that is not a very big change.
    Edit..What was your vision with your old rx? a half a diopter should blur a line or two on the eye chart.
     
    Last edited: Jul 3, 2006
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