Does clear lens extraction give better vision than contact lenses?

Discussion in 'Contact Lenses' started by alice rock, Jan 5, 2004.

  1. alice rock

    alice rock Guest

    I am 49 and have severe myopia (greater than -21 in both eyes) and my
    vision cannot be totally corrected with just contact lenses. Would
    anybody be able to tell me whether or not procedures such as clear
    lens extraction produce better vision than contact lenses?? would such
    a procedure improve my vision? I am currently unable to see well
    enough to drive, would such a procedure produce the slight improvement
    needed for this?

    Thanks, i really would appreciate some feedback.
    alice rock, Jan 5, 2004
    1. Advertisements

  2. alice rock

    LarryDoc Guest

    I'd suggest you consult with your eye doctor who would be in a better
    position to understand the underlying causes of your decreased
    acuity---optical vs physiological or neurological. It is indeed
    *possible* that CLE (perhaps with an ICL or contact lens to correct the
    residual refractive error) would improve your vision.

    You would be wise to ignore replies from people who are not
    professionals in the field or who have not experienced the procedure as
    someone in your situation and with similar history.


    Dr. Larry Bickford, O.D.
    Family Practice Eye Health & Vision Care

    The Eyecare Connection
    larrydoc at eye-care-contacts dot com (remove -)
    LarryDoc, Jan 5, 2004
    1. Advertisements

  3. alice rock

    Otis Brown Guest

    Dear Alice,

    Of course you should see the ophthalmologist who
    would do the operation.

    By using ultra-sound and other measurement techniques
    he can tell you if your suggestion is feasible.


    The Gollstrand Schematic eye lists
    the power of the lens as:

    19.11 diopters (un-accommodated) and 33.06 diopters accommodated

    (Standard young eye.)


    Otis Brown, Jan 5, 2004
  4. alice rock

    AliceRock Guest

    Thanks for your response Larry! I also have astigmatism and my left eye is a
    lazy eye, could this be why my vision can't be corrected fully with
    contacts? If this is the case would CLE be able to improve things?

    I have heard that there is a risk of retinal detachment with the procedure
    would you be able to give me any indication of how serious this risk
    actually is?

    Sorry for all the questions, I just want to find out as much about it as I
    can before I pay for a consultation. I live in the UK, do you know of any
    good specialists based over here?

    Thanks again....

    AliceRock, Jan 5, 2004
  5. alice rock

    LarryDoc Guest

    Yes, one possible reason.
    No, not likely a fix for "lazy eye" and the astigmatism, and any
    remaining refractive error would have to corrected with a contact lens
    or a cornea refractive surgery.
    It is generally a small risk, especially compared to the
    benefit----however, the risk is related to factors which your surgeon
    may be able to determine before proceeding.
    I don't, but hopefully you'll hear from someone else who can offer you a
    You are welcome and good luck with your decision.


    Dr. Larry Bickford, O.D.
    Family Practice Eye Health & Vision Care

    The Eyecare Connection
    larrydoc at eye-care-contacts dot com (remove -)
    LarryDoc, Jan 6, 2004
  6. Alice,
    I too am a -21 myope in my 40's and have been considering the exact same
    questions you have. I recently spent some time in a med school library
    lookking through the past few years of the Journal of Corneal &
    Refractive Surgery, where a lot of these issues are being addressed. Any
    CLE/cataract surgery has some risk of RD and the gerneral consensus
    seems to be that the longer the ocular axial length, which is often
    directly related to the degree of myopia, the greater the risk of RD. I
    saw a table in a recent article that summarized several studies and the
    RD incidence ranged from 0 to 8%. Most researchers feel that the single
    biggest risk factor is whether an Nd-YAG preocedure is needed in the
    event of posterior capsule opacification. When the capsule is opened by
    this procedure, the vitreous can move forward and essentially pull on
    the retina, possibly resulting in a detachment. Groups are noting that
    removing all residual lens material may reduce the rate of PCO, as can
    the use of certain materials and shapes of implanted IOL's.

    My mother has essentially the same ocular conditions I have and had
    cataract removal done 20 years ago when she was in her mid-40's. They
    did almost did everything they could to increase her risk of RD
    (unwittingly) in that no IOL was used (no need for refractive purposes)
    and a NdYAG capsulotomy was performed. She never had any issues. Her
    vision improved somewhat after the surgery in that she no longer had
    image-size reduction caused by the previously necessary high degree of
    refraction, but 20/25 was the best she could get. There is usually too
    much macular stretching to get 20/20 for very high myopes.

    Personally, I'm waiting until cataracts give me no choice. I hate the
    situation I'm in now, but if an RD happened after an elective CLE... I'm
    hoping that time will bring about new insight into the problem, plus age
    is actually a benefit as risk sems to decrease with age due to changes
    in the vitreous. Age-related vitreous changes usually mean less "grip"
    on the retina.

    Johnny Hallman, Jan 25, 2004
  7. alice rock

    LarryDoc Guest

    You've done your research well, Johnny. Both of you should keep in mind
    (and I understand you appreciate this fact) that, surgery or not, you
    are greater risk for RD in any event.

    Another issue to consider is that researchers are developing another
    procedure which looks interesting, if not promising. That is, the
    removal of the lens nucleus and replacing it with either an implanted
    mini-lens or a optical gel to correct the optics. If this works in real
    people, the surgical risk for RD due to vitreous traction is removed
    from the picture, although the overall risk for axial myopes is not and
    we dont know yet what other risks might be introduced by the new

    I do not believe that the implantable contact lens designs (anterior or
    posterior chamber) are currently available in powers to address your
    needs and I'm not certain the risk/benefit profile would be much



    Dr. Larry Bickford, O.D.
    Family Practice Eye Health & Vision Care

    The Eyecare Connection
    larrydoc at eye-care-contacts dot com (remove -)
    LarryDoc, Jan 25, 2004
    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.