First Time Glasses

Discussion in 'Glasses' started by Michael, Dec 3, 2008.

  1. Michael

    Michael Guest

    I'm 42 and have just picked up my very first pair of prescription
    glasses from the eye doc after getting an eye exam. They're "single
    vision" (which means nothing to me). I mainly needed the glasses for
    computer and for reading up close. The doc said I could wear them all
    the time and they would help when driving.

    I'm noticing that things up close are now amazingly clear and easy to
    read. BUT: I'm noticing things like the tv across the room are now
    slightly blurry for a little while then slowly come into focus.

    Is all this just a matter of getting used to wearing glasses for the
    first time ever?

    The eye doc said I can either wear them for reading OR I can wear them
    all the time (like driving at night). Should I only use them for
    reading or just go ahead and wear them all the time?

    I seem to be getting two points of view from folks...some say JUST for
    reading...others (like the doc) say all the time is just fine.

    Thanks!!
     
    Michael, Dec 3, 2008
    #1
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  2. Michael

    Mark A Guest

    Single vision is as opposed to bi-focals or progressives (no-line bifocals).
    No, virtually everyone at your age starts to develop presbyopia, which means
    you need more "plus" correction up close than you do for distance vision.
    Lens come in plus or minus diopter correction, depending on whether it is
    correcting for farsightedness or nearsightedness respectively.
    Assuming your Rx is correct, and you never needed correction up until now,
    you probably only need them for reading (unless you are an alien from
    another planet and aren't developing presbyopia like everyone else your
    age).
    If you can't see clearly with the glasses at a distance, and you can see
    clearly at distance without them, then don't wear them while viewing at
    distance. Good vision is primarily up to you, not up to the OD.

    However, just in case you don't really have single vision lenses, you should
    post your exact Rx in this forum for review (in case want decent advice). If
    you don't have it, got back to your OD and ask for a written copy of your Rx
    (you are entitled to it by Federal law). Also, ask your optician what brand,
    model, lens material of your lenses and post it here.

    It is possible (if the doc says wear them all the time) that you have
    progressives with plano (no correction) power for distance vision area at
    the top of the lens, and a plus correction for the reading area at the
    bottom of the lens. That is the one situation where I can see why he would
    tell you to wear them all the time. Progressive are notorious for having
    distortion caused by improper fitting (and to some extent the very nature of
    a progressive lens), but in most cases you will get used to it over time
    (unless the fitting is just plain wrong).

    There is one other explanation that I can think of, and that is your
    correction that is needed is the same for distance and reading, but there is
    some distortion in your distance vision caused by an aspheric lens that is
    not centered properly on your pupils, or other fitting problem with your
    lenses that is causing distortion in your distance viewing. This seems
    unlikely if you never needed glasses before and then at age 42 now need them
    for reading.
     
    Mark A, Dec 3, 2008
    #2
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  3. Michael

    Salmon Egg Guest

    I start by saying I am not a medical or vision professional. It is
    merely a hobby. :=)

    As you describe it, you see well enough at a distance to not need
    glasses for that purpose. If you did not use a computer, you would only
    require the glasses for reading. So far, it seems that no pro has
    suggested the use of bifocals. If I were you, knowing what I know now, I
    would get bifocals with zero power (effectively no) lens for the main or
    distance vision portion with an add for reading. That add would probably
    be about 3 diopters. Check with your OD. That would enable you to retain
    your old vision for driving and allow you to read books and the like.
    The source of your current problem appears to be that you can no longer
    distort your crystalline lens to focus at reading distance.

    That does not solve the computer seeing problem. What I did was to get
    bifocals for viewing my computer and leaving them at the computer. Then
    as Mike Tyner suggested. buy drug store reading glasses for viewing your
    computer. I you wish to do it for yourself, measure the distance from
    your eye to the computer in meters when you are in your desired computer
    location. Find the reciprocal of that distance. The lenses you buy
    should match that value. I would expect that to be between 1.5 and 2.5.
    If your OD is cooperative, that would help.

    My add for the bifocals was set so that I could look at objects closer
    than my normal reading distance.

    Bill
     
    Salmon Egg, Dec 3, 2008
    #3
  4. Michael

    ShadowTek Guest

    I hate wearing glasses while driving, especially at night. Glare reflects
    off of the lenses and causes distractions. Besides, the rims always
    interfere with a certain perimeter of peripheral vision.
     
    ShadowTek, Dec 3, 2008
    #4
  5. Michael

    Mark A Guest

    Do you have a high quality anti-reflective coating on your lenses?
     
    Mark A, Dec 3, 2008
    #5
  6. Michael

    ShadowTek Guest

    lol No. I just have the same old pair of cheapos that I've had for years.
     
    ShadowTek, Dec 3, 2008
    #6
  7. Michael

    Mark A Guest

    Then what do you expect?
     
    Mark A, Dec 4, 2008
    #7
  8. Michael

    p.clarkii Guest

    your observations are totally as would be expected for an early
    presbyope or early hyperope. just use the glasses when you are doing
    near tasks (reading, computer, etc) and forget about them otherwise.
    as you get older you may find that they don't adversely affect your
    distance vision at all when you first put them on. you are
    experiencing normal physiological changes in the lens and ciliary
    muscle portions of your eye and it occurs to ALL humans at around your
    age. read about presbyopia.
     
    p.clarkii, Dec 4, 2008
    #8
  9. Michael

    ShadowTek Guest

    I expect that that are also others who didn't have the money to spend on
    "high quality" lenses at the time of purchase, which means that it is an
    issue for some people. Also, this being his first pair of glasses, he may
    not have know what kind of lenses would be best to buy, so he may have
    bought a cheaper pair like mine.

    Although, the bottom-of-the-line model is likely to be better than it was
    when I last bought lenses.
     
    ShadowTek, Dec 4, 2008
    #9
  10. Michael

    Dr Judy Guest

    I think that you are hyperopic and your eye doc prescribed your
    distance correction to be used as readers.

    People who are hyperopic can see clearly at distance by flexing a
    muscle inside the eye that controls the lens. This is the muscle that
    is also used to focus at near. At about age 38 to 45, the lens loses
    it's flexability and it becomes harder to read. At age 42, you likely
    have enough flex left to clear your distance vision without glasses
    but not at near, in efffect you "use up" your near flex room to clear
    the distance. By wearing glasses to correct the distance vision, you
    then free up flex to clear near.

    Since you have been flexing that lens for distance for the past 42
    years, you continue to do so even with the glasses which is why the TV
    is blurry with glasses. As you look at it, your visual system relaxes
    and the TV becomes clear.

    At this point you can suit yourself, wear the glasses just for near or
    wear all the time. In another year or two you will find that you need
    them for distance. This is not the glasses making things worse, just
    the normal age related change that would occur whether glasses are
    worn or not.

    Judy
     
    Dr Judy, Dec 4, 2008
    #10
  11. Michael

    The Real Bev Guest

    Assuming you don't get extra coatings or extra-thin lenses, what actual
    quality differences between cheap and expensive CR-39 lenses are there?
    How are they different now?
     
    The Real Bev, Dec 5, 2008
    #11
  12. Michael

    Salmon Egg Guest

    How much are people willing to pay for bragging quality glasses?

    Bill
     
    Salmon Egg, Dec 5, 2008
    #12
  13. Michael

    ShadowTek Guest

    I'm not really sure. I've only owned cheapos; the only ones that I have
    been able to afford when it comes time for new lenses, so they are the only
    ones that I can personally comment on.

    I didn't have any specific features in mind when I said that. I was just
    referring to the typical progression of technology over the passage of
    time.
     
    ShadowTek, Dec 5, 2008
    #13
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