Human vision, visual correction, and visual science

Nystagmus and driving

  Could somebody give me some advice on vision problems and driving?

   I want to know how I go about finding out if I should be driving.   I
have a learner’s permit from Oklahoma.  I live in Florida currently and I
don’t drive, at age 28.  I know how to drive and I have alot of practice,
but I don’t feel comfortable driving, in particular I have had a few "near
accidents" and I always feel nervous driving.  I don’t know what my visual
acuity is, but it is far from perfect 20/20.   I have congenital nystagmus,
caused by hypoplastic optic nerves, with a null point, myopia, and
strabismus, and my left eye is worse than my right eye at distance.  I also
don’t always have constant binocular vision, in fact most of the time I
don’t (but I don’t have amblyopia).   An eye doctor has never told me what
my vision is.  I believe my glasses are around 5-7 diopters.

   I did not take Drivers Ed in highschool because I was in a special PE
class for disabled students.  In college (I have a 2 year degree) in
Oklahoma I took driving lessons, and one of my instructors said he was not
sure I should be driving.  He was very uncomfortable with my driving,
especially on longer lessons.  I really feel fatigued if I drive any longer
than 12 minutes without a break.  My eyes/head feel really fatigued and I
feel like I start to loose concentration.

posted by admin in Uncategorized and have Comments (6)

6 Responses to “Nystagmus and driving”

  1. admin says:

    "Magnulus" <magnu…@bellsouth.net> wrote in message

    news:IdAvd.4019$Ap1.3543@bignews6.bellsouth.net…

    >  Could somebody give me some advice on vision problems and driving?

    >   I want to know how I go about finding out if I should be driving.   I
    > have a learner’s permit from Oklahoma.  I live in Florida currently and I
    > don’t drive, at age 28.

    How long is a learner’s permit valid? It may not be legal to use out of
    state.  If you want to know if you meet the Florida state vision
    requirements, go to a driving license application centre and take whatever
    eye test they offer.  They should be able to tell you if you pass.

     I know how to drive and I have alot of practice,

    - Hide quoted text — Show quoted text -

    > but I don’t feel comfortable driving, in particular I have had a few "near
    > accidents" and I always feel nervous driving.  I don’t know what my visual
    > acuity is, but it is far from perfect 20/20.   I have congenital
    > nystagmus,
    > caused by hypoplastic optic nerves, with a null point, myopia, and
    > strabismus, and my left eye is worse than my right eye at distance.  I
    > also
    > don’t always have constant binocular vision, in fact most of the time I
    > don’t (but I don’t have amblyopia).   An eye doctor has never told me what
    > my vision is.  I believe my glasses are around 5-7 diopters.

    >   I did not take Drivers Ed in highschool because I was in a special PE
    > class for disabled students.  In college (I have a 2 year degree) in
    > Oklahoma I took driving lessons, and one of my instructors said he was not
    > sure I should be driving.  He was very uncomfortable with my driving,
    > especially on longer lessons.  I really feel fatigued if I drive any
    > longer
    > than 12 minutes without a break.  My eyes/head feel really fatigued and I
    > feel like I start to loose concentration.

    Well, I think you answered your own question.  If you don’t feel safe or
    comfortable driving, you shouldn’t drive.

    Dr Judy

  2. admin says:

    There are several issues to resolve here.

    First, is a learners permit fro Oklahoma valid in Florida. I would guess not
    and that you will need to apply for a FL permit. This means you will have to
    meet FL’s vision requirements. Or get a doctor’s waiver if that is possible.

    Second is the philisophical "should you drive". You need to distinguish
    between your fear of driving and your genuine ability to drive. Most people
    get their DL when they are young and clueless. They have no fear of driving.
    By the time they begin to figure out that this dirving stuff is a huge
    responsibility, they have the experience to be more relaxed at it. You
    skipped the "young and clueless" phase where you can get the experience
    without understanding the responsibility. Many a teenager has many "near
    misses" (and a few direct hits :) ). They shrug it off and keep going.
    Hopefully, they learned something along the way. You may not be any
    different than them, you just set higher standards. You need to account for
    both your bad eyes and your lack of experience. I have nystagmus and find
    that I must adapt to how tired I am and how comfortable I am with where I am
    driving. It does limit me more than a "normal" driver. But it doesn’t stop
    me.

    HOWEVER, it is also possible that you just cannot see well enough to drive.
    I worked with my opthamologist to understand where I fit into the fear vs.
    ability balance. She cautioned me against driving at night and driving when
    I am tired. But then she said that the eyes don’t stop me. I am doing fine.
    I would suggest that you find an eye doctor that you trust and get their
    opinion and help. This will also help you get past the fear factor.

    "Magnulus" <magnu…@bellsouth.net> wrote in message

    news:IdAvd.4019$Ap1.3543@bignews6.bellsouth.net…

    - Hide quoted text — Show quoted text -

    >   Could somebody give me some advice on vision problems and driving?

    >    I want to know how I go about finding out if I should be driving.   I
    > have a learner’s permit from Oklahoma.  I live in Florida currently and I
    > don’t drive, at age 28.  I know how to drive and I have alot of practice,
    > but I don’t feel comfortable driving, in particular I have had a few "near
    > accidents" and I always feel nervous driving.  I don’t know what my visual
    > acuity is, but it is far from perfect 20/20.   I have congenital
    nystagmus,
    > caused by hypoplastic optic nerves, with a null point, myopia, and
    > strabismus, and my left eye is worse than my right eye at distance.  I
    also
    > don’t always have constant binocular vision, in fact most of the time I
    > don’t (but I don’t have amblyopia).   An eye doctor has never told me what
    > my vision is.  I believe my glasses are around 5-7 diopters.

    >    I did not take Drivers Ed in highschool because I was in a special PE
    > class for disabled students.  In college (I have a 2 year degree) in
    > Oklahoma I took driving lessons, and one of my instructors said he was not
    > sure I should be driving.  He was very uncomfortable with my driving,
    > especially on longer lessons.  I really feel fatigued if I drive any
    longer
    > than 12 minutes without a break.  My eyes/head feel really fatigued and I
    > feel like I start to loose concentration.

  3. admin says:

    Magnulus wrote (in part):

    >> I really feel fatigued if I drive any longer than 12 minutes without a
    >> break.  My eyes/head feel really fatigued and I feel like I start to
    >> loose concentration.

    I’m focused on this statement by the OP.

    Mr/Ms. Magnulus: what you’ve said here sounds an awful lot to me like the
    answer: you’re reasonably competent to drive for 12 minutes at a time.  Any
    longer and you’re dangerous.

    Unless medical strides can be made that can extend this 12 minute driving
    interval, it seems abundantly clear to me that you place yourself at risk
    (your choice, I would argue), but that you also endanger the lives of others
    (absolutely /not/ your choice, I would argue) if you drive beyond this 12
    minute interval when you are fatigued and unable to concentrate.

    Best of luck to you . . . and please be careful.

  4. admin says:

    But what more proofs do you need to understand that the OD you are
    referring to know nothing about eyes and vision???
    You have to search for yourself the truth!

  5. admin says:

       Thanks for the advice.

      I printed out a Snellen eye chart and I used an eye patch with glasses.
    Individually, my left eye is 20/70 or worse, and my right eye is around
    20/50, with correction.  And this is the best head position for the null
    point.  For both eyes together, it’s hard to tell.  I’m guessing it’s at
    least no better than my best eye, and most likely worse (at least it seems
    to be).   Binocular vision is hard for me to constantly mantain.  I don’t
    know if one of my eyes is genuinely weaker than the other due to the optic
    nerve hypoplasia (thus causing the nystagmus), or simply a bad fitting of a
    perscription.  Which do you think is more likely?

  6. admin says:

      I used a chart with a sans-serif font and I got about 20/60 in both eyes
    together, though the right eye can see a bit more of the 20/40 line, but not
    all of it.  For the left eye 20/60 is readable but just barely.

      I am going to go in for a vision test tomorrow.  I’ll have to walk a mile
    or so, ride a bus, then get a taxi to come home, perhaps.   It’s one of
    those "one-hour opticals", but the optometrist that works there is fairly
    good.  OTOH, I have gone to "low vision specialists" that I felt did very
    little for me.   I’m not going to accept any BS though, if he cannot really
    do anything for my perscription, I’m not going to take any new glasses, and
    I also want a straight up answer as to wheather he thinks I can see well
    enough to drive.

       I ought to test my eyes in positions other than the null point- if most
    of it is very poor, I probably shouldn’t be driving as being able to see
    alot without having to turn the head is important too.

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