Question about using laptops/notebook computers and progressive lens

Discussion in 'Optometry Archives' started by Ivan, Jan 3, 2004.

  1. Ivan

    Ivan Guest

    I have a question on using laptop and notebook computers. Are computer
    lens any good for laptops and notebook computers? Or is it better to
    use the reading segment of the lens to look at the laptop screen?
    Because I noted that laptop screens are normally placed nearer and
    lower from the eyes than desktop monitors. So for those who only use
    laptops, computer lens may not be necessary. Choosing a lens with
    short corridor (very little mid-distance, but optimised for near and
    far vision, such as Solamax, AO Compact, etc..) may be better?
    Ivan, Jan 3, 2004
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  2. Ivan

    Mark A Guest

    It all depends on your personal distance from eyes to the screen, no matter
    whether the screen is on a laptop or on a desk. It also depends on how long
    you work at the computer because it is hard to stay hunched over the screen
    (without sometimes leaning back) for long periods of time.
    Mark A, Jan 3, 2004
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  3. No.

    Any lens you use interferes with the natural eye function, so it is not
    a good thing to be used.
    Rishi Giovanni Gatti, Jan 6, 2004
  4. Ivan

    Mark A Guest

    Even though laptop screens are usually lower, many people just have their
    desktop monitors too high for someone with presbyopia. I guess the ergonomic
    people who suggest having the monitor higher are too young. The top of my
    19" desktop CRT is at eye level.
    Mark A, Jan 6, 2004
  5. Ivan

    Mark A Guest

    Choosing a lens with short corridor (very little mid-distance, but
    optimised for
    I am a little confused on your recommendation. Doesn't a normal corridor (as
    opposed to short corridor) lens have better (larger) intermediate vision?
    Wouldn't that be better for computer use than a short corridor lens?
    Mark A, Jan 6, 2004
  6. Ivan

    Ivan Guest


    What you're saying is that short corridor lens is better than normal
    progressive lens. This confirms my thinking that most progressive lens
    wearers use mosltly the reading and distant segments only.The
    intermediate portion is seldom used. However, if one has to use a
    computer, this is where the complication starts. The computer monitor
    is best viewed at about 18 inches, which requires the use of the
    intermediate (corridor) of the lens. So for those who cannot avoid
    using a computer, a compromise has to be made.

    1. Good reading Good distant Poor intermediate (cannot use computer)
    2. Good reading Good intermediate Poor distant (computer lens)
    3. Good intermediate Good distant Poor reading (cannot read)

    What I am trying to find out is the best compromise. Item 1 seems to
    be the least disadvantage and if I can get away with using the reading
    segment to view my laptop screen then I can live with only one pair of
    glasses. But again I not sure whether it will work out that way.

    (I am not in any optical business nor related to any.)

    BTW does anyone know the correct way to mark pupil distance (PD)
    accurately? Please help me on this. I know that for progressive lens
    it is quite critical. My optician places his finger 15 inches away
    from my nose. I have to stare at his finger while he mark out two dots
    (one for each eye) on the dummy lens set into my spectacle frame. The
    lab will base on this marking to set the progressive lens into the
    frame. I have read somewhere(unfortunately I don't remember from
    where) that while marking the PD, one has to look at a more distant
    object, or better still marking one eye at a time. If so how practical
    it is, and how exactly it is done?

    Ivan, Jan 9, 2004
  7. It simply cannot be so complicated!
    Your line of reasoning is wrong from the very base.
    You need a paradigm shift.

    Please visit
    and you can buy a replica of the Original Dr. Bates book
    "Perfect Sight Without Glasses"
    and if you are interested, join the group
    Rishi Giovanni Gatti, Jan 9, 2004
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