Instrument myopia

Discussion in 'Optometry Archives' started by andrew Judd, Aug 19, 2003.

  1. andrew Judd

    andrew Judd Guest


    Here in New Zealand we use binocular optical devices to measure the
    vision for the drivers licence.

    When these devices were introduced there was talk in the press (from
    opticians) that some people with a highly emotional nature would not
    be able to get an accurate reading using the devices.

    I found that myself and a friend of mine could not see well thru these
    devices even though the target was well illuminated and covered a
    considerable amount of the visual field. We both wore our full
    strength glasses and/or contact lenses. I suppose I can agree that
    both my friend and I are highly emotional.

    It is my understanding that all optical devices that are placed in
    front of a person are compensated for instrument myopia, because
    although the eyes are pointing forwards, the mind still believes the
    object is close to the observer.

    Does anybody have any specific knowledge about instrument myopia?

    Does anybody have any more information to support the claims in the
    press (reported to be by opticians) that certain people would not be
    able to get an accurate measurement from these devices.

    Is there any research on this?


    andrew Judd, Aug 19, 2003
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