They invented wavefront glasses and claim supervision!

Discussion in 'Glasses' started by acemanvx, Jan 2, 2006.

  1. acemanvx

    Salmon Egg Guest

    I have seen a number of these posts. They do not make sense. The posts seem
    to be based upon the stringing together of certain buzz words. I am a mere
    physicist trying to understand the science, art, and business, as well as
    quackery of vision.

    To my mind, the term wave front correction corresponds to what us old time
    optical types call "figuring." It makes some sense for refraction correction
    of eye balls. By shaping the cornea, it is possible to rid the eye of
    on-axis aberrations if you ignore chromatic aberration. That is what lasik
    is about.

    It makes little sense to go to that trouble for ordinary spectacle lenses.
    Your eye swivels around in various directions and wiping out an aberration
    for one of these directions is likely going to add aberration for another.

    Bill
     
    Salmon Egg, Jan 4, 2006
    #21
    1. Advertisements

  2. acemanvx

    Dr. Leukoma Guest

    I've said this before, and you know it, but RGP's can be configured to
    reduce or eliminate the night glare and starbursts. Of course, pilo is
    both easy and cheap, fairly safe in low doses, and acceptable for a
    presbyope. For a non-presbyope, pilo stimulates accommodation and can
    cause headaches from accommodative spasm.

    DrG
     
    Dr. Leukoma, Jan 4, 2006
    #22
    1. Advertisements

  3. I recently attended an optometric conference that featured a number of
    prominent optometric leaders discussing the potential of wavefront
    spectacles. One of the most fascinating speakers talked about his
    experience using wavefront autorefractors on pilots that have 20/10
    uncorrected vision. Consistently the wavefront analysis showed that
    many of these "perfect eyes" had considerable abberations and needed a
    corrective lens. BUT, when these eyes were "corrected", the pilots saw
    consintently worse with their "corrective lenses".
    This goes back to the basic fundamental fact that vision is a higher
    level process that involves the visual cortex and its ability to
    interpret the image it receives. These pilots have "20/10 brains" that
    can cancel the spherical abberations of their natural eye, but that
    same part of their visual system breaks down when it is given a
    "textbook perfect" wavefront guided image.

    Wavefront glasses will not take a 20/25 visual system and make it
    resolve to 20/10, anymore than wavefront spectacles can take a 20/10
    eye to 20/5.
     
    doctor_my_eye, Jan 4, 2006
    #23
  4. acemanvx

    crvc Guest

    Quick
    Jan 3, 9:00 pm show options

    Newsgroups: sci.med.vision
    From: "Quick" <> - Find messages by this
    author
    Date: Tue, 03 Jan 2006 21:00:42 GMT
    Local: Tues, Jan 3 2006 9:00 pm
    Subject: Re: They invented wavefront glasses and claim supervision!
    Reply | Reply to Author | Forward | Print | Individual Message | Show
    original | Report Abuse




    - Hide quoted text -
    - Show quoted text -


    <<<<<
    I didn't get that impression. I more or less got the impression
    that he has "managed" to drive. "Pilocarpine was the only
    reason I passed my driving test" does not inspire confidence.
    I went to renew my license and found they had a box I was supposed to
    look into. There were colored lights and symbols I had to be able to
    see clearly, as if I was driving a car at night. I mumbled something
    about needing the restroom and ran out to my truck where I had
    pilocarpine. I put the drops in and by the time I made it back to the
    license bureau my eyes had constricted enough that I had no problem
    passing the test.
     
    crvc, Jan 4, 2006
    #24
  5. acemanvx

    acemanvx Guest

    I heard this too. Perhaps the wavefront wasnt aligned properly or they
    needed some time to get used to aberration free vision. 20/10 vision is
    very nearly aberration free and close to the retinal and even brain
    limit. However the brain is flexable and can relearn what clear vision
    is. I have seen myopes not get glasses till they were 20, even 30 and
    for the first time they see clearly. At first they dont get the concept
    of clear vision and many arent even overwhelmed. They physically see
    clearly but its still a blur in the brain. Over time the brain learns
    about clear vision. I read the story of one female who was like 25 and
    a poor immigrant and a high myope. When she got glasses she saw 20/30
    but when asked the difference she said theres a small difference. This
    proves the brain theory point. Her eyes see 20/30 but her brain is
    still seeing worse than 20/200.

    Another example is I can take my 20/30 vision and make it 20/25 with
    pinholes however things actually look worse somehow even though im
    reading 20/25! My brain hasnt learned such sharp vision!
     
    acemanvx, Jan 5, 2006
    #25
  6. acemanvx

    Quick Guest

    Oh, OK,
    I can't help but wonder why the brain didn't fix things
    before glasses?
    You imply it didn't when they were uncorrected.
    Why would it do it now?
    Oh. My bad. It was *proof*.
    In that case I'll retract everything I said.

    -Quick
     
    Quick, Jan 5, 2006
    #26
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.