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Air Optix for Astigmatism 0 degree Axis

This is a discussion on Air Optix for Astigmatism 0 degree Axis within the Air Optix for Astigmatism forums; Hi I'm Vincent Brand: Air Optix for Astigmatism This is the prescription for my right ...


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  #1 (permalink)  
Old 12-17-2009, 05:43 AM
Contact Lenses Forum - Freshman
 
Join Date: Dec 2009
Posts: 1
Default Air Optix for Astigmatism 0 degree Axis

Hi I'm Vincent
Brand: Air Optix for Astigmatism
This is the prescription for my right eye:
Power/Sphere = -2.5
BC= 8.7mm
DIA= 14.5mm
Cylinder= -0.75
Axis= 0 degre

Apparently, this lens does not come in a 0 degree axis.
Do you know if the 0 degrees is equivalent to another axis.
Thanks for the answer.
Best regards
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  #2 (permalink)  
Old 12-17-2009, 09:35 AM
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Join Date: Nov 2009
Location: near Hamburg, Germany
Posts: 2,143
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Quote:
Originally Posted by onlyonevincent View Post
Hi I'm Vincent
Brand: Air Optix for Astigmatism
This is the prescription for my right eye:
Power/Sphere = -2.5
BC= 8.7mm
DIA= 14.5mm
Cylinder= -0.75
Axis= 0 degre

Apparently, this lens does not come in a 0 degree axis.
Do you know if the 0 degrees is equivalent to another axis.
Thanks for the answer.
Best regards
Hi onlyonevincent

Welcome to the forum. I'm sure you will get loads of useful information here.

Now to your question. I'm no expert in astigmatism but the problem is your cornea is no longer spherical and therefore a cylinder correction needs to be applied to restore sharp vision.
I would hazard an informed guess that 0 deg cylinder is equivalent to 180 deg cylinder. i.e. an upside down cylinder, like looking at North instead of South.

Maybe someone else can confirm this later.

knotlob
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  #3 (permalink)  
Old 12-31-2009, 11:14 AM
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Join Date: Dec 2009
Location: Folsom California
Posts: 39
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An Axis of 0 degrees is the same as an Axis of 180. Both numbers lie the same way across your eye. It's weird that they wrote an Axis of 0 degrees. Usually it's given within the range of 1-180 degrees
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  #4 (permalink)  
Old 12-31-2009, 11:41 AM
Contact Lenses Forum - Ph.D.
 
Join Date: Nov 2009
Location: near Hamburg, Germany
Posts: 2,143
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Quote:
Originally Posted by Littlebit View Post
An Axis of 0 degrees is the same as an Axis of 180. Both numbers lie the same way across your eye. It's weird that they wrote an Axis of 0 degrees. Usually it's given within the range of 1-180 degrees
Thanks for confirming that Littlebit.

knotlob
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  #5 (permalink)  
Old 12-31-2009, 11:57 AM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 210
Default Air Optix for Astigmatism 0 degree Axis

Hey, thanks for this thread, folks. I learned something about astigmatism today. Apparently it's not a mistake to put 0 for the axis measurement on your prescription and it's the same as 180. Like they used to say in school: "0 is to 180 as right is to starboard." Cool.
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Old 02-20-2012, 09:48 AM
Contact Lenses Forum - Freshman
 
Join Date: Feb 2012
Posts: 1
Default need suggeston

hi,
on the same note, I have a cylderical axsis of 60 degrees, can i get contact lenses for that, and if i wear contact lenses without cylendrical axsis, what will be the P's and Q's of same.

thnx
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Old 02-20-2012, 10:40 AM
Contact Lenses Forum - Senior
 
Join Date: Dec 2007
Posts: 373
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Quote:
Originally Posted by Niner View Post
Like they used to say in school: "0 is to 180 as right is to starboard." Cool.
What is a statement like that called? It's not a syllogism, I tried that.
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Old 02-21-2012, 07:49 PM
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Location: south of boston
Posts: 17
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I am learning something new all the time
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