On Dec 22, 12:43 pm, William Stacy <wst...[at]obase.net> wrote:
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Roger that. Could passing the exam early in the morning, mid day or
later at night have some positive/adverse influence? Obviously no
reading in all cases would apply. Also when you talk about nutrition,
do you have anything specific in mind? There is the suppl/Vitamin A
myth (or reality?) going around. Is there any type of food one should
avoid?

As usual, thanks again for your input.

pershing wrote:

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activity as you can. Aerobics are definitely in order, and make sure
your nutrition is good. There may be no discernable effect, but as
Groucho says, it couldn't hoit.

otisbrown[at]pa.net wrote:
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[snip]

Otis is our resident 'Net Loon. Please ignore him and you'll be just fine.

Dear Pershing,

As suggested by some eye-docs, you could consider
using a simple reading glass for all close work for
several weeks prior to an examination. See:

www.chinamyopia.org

and

www.myopiafree.com

Best,

Otis


pershing wrote:
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William Stacy wrote:
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Other than taking time of books/computer, are there any "eye exercises"
I can perform to optimize my chances? A quick google query returns some
results such as this http://www.eyesercise.com/ ... but when it looks
too good to be true it usually is.

Thank you again

pershing wrote:

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Yesterday's numbers would disqualify on both counts (over .75 cyl and
sph equiv =-.50), but the other occasion you would pass on the cyl and
barely fail on the sph. equiv.

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examiner, and your responses.


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are a bit on the lenient side. Your doc on the other hand if anything
is biased the other way, esp. if he/she also fits glasses. Sounds to me
like you'll make it. Avoid as much computer work and heavy reading as
you can until the official exam.

w.stacy, o.d.

William Stacy wrote:
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My current readings from yesterday are:

1. Right eye: +0.25 (Sphere), -0.25 (Cyl) * 150 , uncorrected vision
6/6 and no other problems
2. Left eye: 0 (Sphere), -1.00 (Cyl) * 180 , uncorrected vision 6/7.5
and no other problems

I was tested on another occasion about 6 months ago and my reading was
0 (Sphere), -0.75 (Cyl) in the left eye. Both times the people who
performed the tests were unaware of the standards I posted, they simply
made tests.

You say that a +0.12 (Sphere), -0.75(Cyl) would qualify me. Is there a
lot of difference between 0 and +0.12? Could this difference be
associated to measuring instruments? I mean if I try it another time
could the reading be that different? My eyes have been getting some
major pounding for the last 3 months (Comp Sc student here) so I little
bit of brake before the exam may have some influence too.

The results were not yet sent for official review so I don't know how
strict they are. I don't know if for example my good right eye could
compensate for the left eye being slightly worst. I prefer to not take
any chances and I will try to present my Opt with the standard and see
if something can be done.

Thanks for your help

well your posts do not clarify what your cycloplegic refraction is. you
said "+.25 myopia" which doesn't make sense. The plus sign means
hyperopia, not myopia, so the question is self-contradictory. the rule
in the link you give is pretty plain: no more than .75 astigmatism (+
or -), and no spherical equivalent of myopia greater than -.25. If your
astigmatism is 1.00, you're out. If it's -.75 then the sphere power
must be +.12 or greater + (0 or any minus would disqualify you).

If the astigmatism is +.75, then the sphere could be as much as -.62,
which is the same thing, just written in different form.

Those silly standards are set in stone? Too bad if you're just over.
You might try again, as there is some variation from measurement to
measurement. If you try again, make sure they fully cycloplege you (ask
for 2 drops per eye, 5 min apart), and don't do any reading the day of
the exam.

As an old ex USAF optometrist, I'd far prefer a pilot who's -.50 (fails,
even if 20/20) to one who's +2.50 and 10^ esophoric with even 2^
vertical deviation (passes). Unfortunately, we had to go by the book.
That's one reason I didn't stay in...

w.stacy, o.d.

pershing wrote:

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Mike Tyner wrote:
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Good thanks, In that case I have some more small questions.

Given http://www.toronto.drdc-rddc.gc.ca/m.../visreq_e.html In
section 8 there is a standard for Pilot applicants in regard to Myopia,
Hyperopia and Astigmatism. I would like to make sure I am interpreting
the table correctly.

1. It says that for Astigmatism "Cylinder power not more than 0.75D in
either eye". If there is no sign in the number, are we talking about
max being + 0.75 and - 0.75 or there is only a limit on the positive
side (in which case -1.00 would be acceptable)?

2. For Myopia "Not more than - 0.25 spherical equivalent in either
eye". This is a reference to the actual spherical equivalent
calculation of (Cyl/2) + Sphere as described in above post or is it the
spherical equivalence of (-0.25/2) + Sphere?

3. Is the scale allowing for values between 0 and 0.25? I am trying to
see if (-0.75/2) + 0.175 = -0.25 spherical equivalence is a valid
combination.

Thanks again.

"pershing" <pershing33[at]gmail.com> wrote

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Yup.

+0.25 - (1.00/2) = -0.25.

-MT