Ocular Albinism

Discussion in 'Optometry Archives' started by Dave, May 22, 2004.

  1. Dave

    Dave Guest

    I have some signs of ocular albinism, blond fundus,
    iris transillumination, nystagmus, but my ERG was normal
    and am not sensitive to sunlight. I have never had a VER test.
    I've read that this is the best test for this. IS that correct?
    Visual Acuity is 20/40. I am red-green color blind.
     
    Dave, May 22, 2004
    #1
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  2. (Dave) wrote in @posting.google.com:
    If you can see well, why do you need the test? Would the outcome change
    anything you do? The transillumination and the blond fundus seem pretty
    categorical to me.

    Scott
     
    Scott Seidman, May 22, 2004
    #2
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  3. Dave

    Dr Judy Guest

    The iris transillumination and nystagmus are sufficient for diagnosis of
    ocular albinism. Electro diagnostic testing (ERG and VER) would not add
    anything to the diagnostic decision.

    Your visual acuity is legal for driving and good enough that you should have
    few problems with any visual task. There is no treatment for ocular
    albinism so further diagnosis would also not be value.

    For more info see:

    http://www.revoptom.com/handbook/SECT58a.HTM

    Dr Judy
     
    Dr Judy, May 22, 2004
    #3
  4. To my knowledge, the ERG is pretty much normal to supra-normal in ocular
    albinism.

    While some in this group have said a VEP will add nothing, I should point
    out that this is not entirely true. Albinos have abnormal (increased?)
    decussation (amount of crossing) of the optic pathway fibers. It is possible
    to measure this decussation with a special type of VEP, which is not
    commonly done, as far as I know. More in specialized laboratory situations.

    However, it is a moot point, as the rest of the clinical situation is
    consistent with ocular albinism, and this test would not change that
    diagnosis, nor the treatment and prognosis. So there...


    David Robins, MD
    Board certified Ophthalmologist
    Pediatric and strabismus subspecialty
    Member of AAPOS
    (American Academy of Pediatric Ophthalmology and Strabismus)
     
    David Robins, MD, May 23, 2004
    #4
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