Does under prescribed lenses makes computer work more comfortable?

Discussion in 'Optometry Archives' started by losheng, Jun 29, 2004.

  1. losheng

    losheng Guest


    I am moderatly myopic, around -3.5D for both eyes. After going to the
    optician today, I've found that it is actually more comfortable to use
    under prescribed lenses, say by around 0.5D, when doing near reading.
    I've never noticed this (since I've never tried under-prescribed
    lenses for reading), and wonder if this is normal, or really a sign of
    the onset of presbyopia?

    losheng, Jun 29, 2004
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  2. losheng

    Ono Guest

    If you are 40 or above, it is the onset of presbyopia.
    Ono, Jun 29, 2004
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  3. losheng

    amni Guest


    Some undercorrection is more convenient at any age.
    Not only because of FOCUSING(=better accomodation) but
    because of MAGNIFYING OF THE OBJECTS(=better resolution).
    I noticed this fact since I was a kid: I used no glasses
    for more convenience for reading&writing and when my prescription
    passed -3D I used my old prescription glasses
    for reading&writing.

    Note that too much undercorrection is not more convenient
    because you cannot read with _both_ eyes if
    you read from a distance less than 8 inch.

    2 D undercorrection is more convenient
    for reading and writing and
    1 D undercorrection is more convenient for computer work.

    If your eyes are aging than you have no choice
    but to use undercorrection (aging eyes cannot
    focus well on a near object).


    amni, Jun 29, 2004
  4. losheng

    losheng Guest

    Hey, guys,

    Thanks for the various feedback. I'm 33 this year and was wondering if
    it could be a sign of weakening sight, or just mere paranoia.

    I understand that that is a movement now to prescribe progressive
    lenses for young myopic kids, with under correction of about 1.5D for
    near reading. In singapore, where 80% of the population is myopic,
    treating myopia is a big issue right now. So I guess under correction
    for near reading does make things more comfortable at all ages.

    So perhaps instead of going for 0.5D under correction, I might as well
    try a 1.0D undercorrection. For someone whose job is glued to the
    computer for 8-10 hours a day, anything to reduce eye strain is a

    losheng, Jul 3, 2004
  5. losheng

    losheng Guest

    Please forgive my ignorance, but could you please tell me what is
    accomodative training?

    losheng, Jul 3, 2004
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