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Science Forum Index » Medicine - Vision Forum » New prescription
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| Laura via MedKB.com |
 Posted: Sun Feb 11, 2007 12:38 pm |
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I have just got a prescription that reads
-1.25
-2.50 -0.25 x 140
A friend tells me that a 1.25 difference between the eyes is quite big and
that the difference will make it uncomfortable. She has a difference of 1
between her eyes.
My old prescription was -1.25 and -1.50 and I didn't notice the difference
between them. Now I have the extra -1 will I end up having to wear them for
most of the time?
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| Mike Tyner |
| Posted: Sun Feb 11, 2007 1:42 pm |
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"Laura via MedKB.com" <u12444@uwe> wrote
Quote: My old prescription was -1.25 and -1.50 and I didn't notice the difference
between them. Now I have the extra -1 will I end up having to wear them
for
most of the time?
The new glasses will probably feel weird at first. If you don't get used to
it, there are several techniques for reducing the discomfort.
Whether you wear them "most of the time" is a matter of preference. The only
time you "have to" wear them is driving.
You might wear them more than usual for a while, to make sure you can get
used to them.
-MT |
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| Laura via MedKB.com |
| Posted: Sun Feb 11, 2007 2:22 pm |
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Why might they feel weird? Is there something unusual about the prescription?
Laura
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| Mike Tyner |
| Posted: Sun Feb 11, 2007 2:26 pm |
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"Laura via MedKB.com" <u12444@uwe> wrote in message
news:6da7551eda0b4@uwe...
Quote: I have just got a prescription that reads
-1.25
-2.50 -0.25 x 140
My old prescription was -1.25 and -1.50 and I didn't notice the difference
And let me be the first to express a little suspicion about the validity of
your refraction.
Advancing -1.25 in one eye with _no_ change in the other is a little
unusual. It's one of those changes that a good refractionist would check
three times before committing to it.
If he or she didn't fuss over the left eye during refraction, ask them to
repeat the test on another day before before making glasses.
-MT |
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| Laura via MedKB.com |
| Posted: Sun Feb 11, 2007 6:22 pm |
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| A Lieberma |
| Posted: Sun Feb 11, 2007 7:42 pm |
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"Laura via MedKB.com" <u12444@uwe> wrote in news:6daa558dff939@uwe:
Quote: I did the test and could see the 20/60 line and with the other eye I
could just make out the 20/200. I could see it was a Y but it was
quite blurry.
Laura,
Please disregard Otis's postings. He is not in the medical profession and
not in any position to give medical advice.
Thanks!
Allen |
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| Dan Abel |
| Posted: Sun Feb 11, 2007 8:21 pm |
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In article <6da7551eda0b4@uwe>, "Laura via MedKB.com" <u12444@uwe>
wrote:
Quote: I have just got a prescription that reads
-1.25
-2.50 -0.25 x 140
A friend tells me that a 1.25 difference between the eyes is quite big and
that the difference will make it uncomfortable. She has a difference of 1
between her eyes.
My old prescription was -1.25 and -1.50 and I didn't notice the difference
between them. Now I have the extra -1 will I end up having to wear them for
most of the time?
I don't think that it is that big of a difference. I'm not a doctor.
Perhaps you should consult your doctor, although normally you will be
warned if there is a potential problem. I had a difference of 12, which
is a big deal. I switched to contacts. After some time, I could use
glasses, although I think I only saw out of one eye.
The glasses change the size of the image. The brain normally merges the
images from the two eyes. If the images are too different in the size,
the brain can't merge them and you see double. |
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| otisbrown@pa.net |
| Posted: Sun Feb 11, 2007 9:12 pm |
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Dear Laura,
Those values of visual acuity are close to the
prescription you received.
Looks like all is in order for you.
Try to ingnore Allen Liberman. He thinks everyone
is too stupid to do these wise checks themselves
as you have done them.
Best,
Otis
On Feb 11, 5:22 pm, "Laura via MedKB.com" <u12444@uwe> wrote:
Quote: I did the test and could see the 20/60 line and with the other eye I could
just make out the 20/200. I could see it was a Y but it was quite blurry.
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Message posted via MedKB.comhttp://www.medkb.com/Uwe/Forums.aspx/vision/200702/1 |
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| A Lieberma |
| Posted: Sun Feb 11, 2007 9:31 pm |
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"otisbrown@pa.net" <otisbrown@pa.net> wrote in
news:1171242766.298428.88150@m58g2000cwm.googlegroups.com:
Quote: Looks like all is in order for you.
Dear Laura,
Please disregard Otis's postings. He is not in the medical profession and
not in any position to give medical advice such as above.
Thanks!
Allen |
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| Mike Tyner |
| Posted: Sun Feb 11, 2007 10:51 pm |
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Quote: Why might they feel weird? Is there something unusual about the
prescription?
The additional minus will make objects appear a little smaller and a little
more bowed ("barrel") in one eye.
When _both_ eyes need stronger lenses, the change in size and shape pretty
easily tolerated.
Reducing image size in one eye compared to the other creates a slight visual
"twist" since the left eye sees things as if they are further away. Usually
it just takes a few days to acclimatize. Many people adapt with no trouble
at all.
-MT |
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| chris via MedKB.com |
| Posted: Mon Feb 12, 2007 3:15 pm |
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| Dan Abel |
| Posted: Mon Feb 12, 2007 10:07 pm |
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In article <6db544aa33c7f@uwe>, "chris via MedKB.com" <u12444@uwe>
wrote:
Quote: 12 is alot but must be unusual.
What difference might someone have that is big enough to be visually
disturbing if they don't wear glasses?
If someone doesn't wear glasses, it is unlikely that they have a
significant difference, or else they see only out of one eye. If they
wear contacts, that doesn't cause a problem. I wore contacts for many
years for that reason. |
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