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  • Trifocals versus progressives?

    From kmmayer97@gmail.com@21:1/5 to Daniel P. B. Smith on Mon Apr 8 22:48:17 2019
    On Saturday, March 13, 2004 at 7:15:30 PM UTC-5, Daniel P. B. Smith wrote:
    Well, I've about reached the limit with bifocals. My accommodation is
    now weak enough that I cannot achieve comfortable, sharp vision at both computer-screen distance and reading distance with a single correction.

    I am not at all concerned about bifocal lines being visible. But I am
    very critical about wanting to see things clearly.

    So, I'd like to hear from people who've switched from trifocals to progressives or vice-versa--purely on the basis of providing clear
    vision, which is better?

    --
    Daniel P. B. Smith, dpbsmith at world dot ess tee dee dot com
    "Elinor Goulding Smith's Great Big Messy Book" is now back in print!
    Sample chapter at http://world.std.com/~dpbsmith/messy.html
    Buy it at http://www.amazon.com/exec/obidos/ASIN/1403314063/

    Progressives have VERY limited horizontal range of vision, so if you have multiple monitors side by side, you will need a lot of horizontal head movement to find and get into focus. Trifocals are MUCH better for this. One BIG trade-off with trifocals is
    that fixed templates may make it hard to get all the prescription ranges the way you need them for each of the 3 areas. Progressives are more forgiving in this area.

    For me progressives just did not work because for computer use I needed the middle part of the lens the most a but it is the narrowest so required a lot of head movement. 12-16 hours in front of screens and it gets tiring fast; even after only 2-3 hours (
    after weeks of trying to get used to them).

    YMMV.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From The Real Bev@21:1/5 to kmmayer97@gmail.com on Mon Apr 8 23:16:30 2019
    On 04/08/2019 10:48 PM, kmmayer97@gmail.com wrote:
    On Saturday, March 13, 2004 at 7:15:30 PM UTC-5, Daniel P. B. Smith
    wrote:
    Well, I've about reached the limit with bifocals. My accommodation
    is now weak enough that I cannot achieve comfortable, sharp vision
    at both computer-screen distance and reading distance with a single
    correction.

    I am not at all concerned about bifocal lines being visible. But I
    am very critical about wanting to see things clearly.

    So, I'd like to hear from people who've switched from trifocals to
    progressives or vice-versa--purely on the basis of providing clear
    vision, which is better?

    -- Daniel P. B. Smith, dpbsmith at world dot ess tee dee dot com
    "Elinor Goulding Smith's Great Big Messy Book" is now back in
    print! Sample chapter at http://world.std.com/~dpbsmith/messy.html
    Buy it at http://www.amazon.com/exec/obidos/ASIN/1403314063/

    Progressives have VERY limited horizontal range of vision, so if you
    have multiple monitors side by side, you will need a lot of
    horizontal head movement to find and get into focus. Trifocals are
    MUCH better for this. One BIG trade-off with trifocals is that fixed templates may make it hard to get all the prescription ranges the way
    you need them for each of the 3 areas. Progressives are more
    forgiving in this area.

    For me progressives just did not work because for computer use I
    needed the middle part of the lens the most a but it is the narrowest
    so required a lot of head movement. 12-16 hours in front of screens
    and it gets tiring fast; even after only 2-3 hours (after weeks of
    trying to get used to them).

    You can get GOOD bifocals from Goggles4U for under $30 -- they have
    40%-off sales every once in a while. Single-vision glasses are perhaps
    half of that. If you're farsighted with no or minimal astigmatism
    reading glasses from the dollar store are perfectly good.

    Having to move my head around in order to see clearly is intolerable. I
    use dollar-store readers for computer (+1.25) and books (+2.25) and
    stack them up for splinter removal. I have bifocal glasses and
    sunglasses, but the +2 part is only for emergencies.

    I've bought glasses from Goggles4U for a long time and have been happy.
    The biggest nuisance is trying to figure out what size frames to get,
    but if vanity doesn't come into play you're way ahead of the game.


    --
    Cheers, Bev
    My house isn't a pigsty, it's an Immunity Enhancement Center.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)