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Another Base Curve question

This is a discussion on Another Base Curve question within the 1-Day Acuvue Moist forums; I had an eye exam today (new doctor) and received what I thought was a ...


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Old 03-19-2012, 10:32 PM
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Default Another Base Curve question

I had an eye exam today (new doctor) and received what I thought was a simple prescription renewal. When I checked I discovered that, although all other specifications are the same, this new prescription lists a base curve of 8.5, and the old one is 9.0. Based on other posts I've read here, this seems like it is a significant difference... is that true? What are the physical differences between a lens that has a base curve of 8.5 and one that is 9.0? Am I going to have trouble with these? Thanks in advance for any information you can provide!
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Old 03-19-2012, 11:13 PM
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Quote:
Originally Posted by singerjeannie View Post
I had an eye exam today (new doctor) and received what I thought was a simple prescription renewal. When I checked I discovered that, although all other specifications are the same, this new prescription lists a base curve of 8.5, and the old one is 9.0. Based on other posts I've read here, this seems like it is a significant difference... is that true? What are the physical differences between a lens that has a base curve of 8.5 and one that is 9.0? Am I going to have trouble with these? Thanks in advance for any information you can provide!
0.5mm will make a difference and the fit would be tighter if the diameter was increased the fit may be ok but this was not the case. I would stick with 9.0.

Ex.my normal bc for soft contact lenses is 8,6/8,7 but in Acuvue tru eye i had to go 9,0

What was the brand prescribed?
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Old 03-19-2012, 11:18 PM
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[quote=singerjeannie;204785]The brand is 1 Day Acuvue Moist. The diameter is the same. I think I may have to call them in the morning and ask about this... I don't want them any tighter! Thank you!
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Old 03-20-2012, 12:25 AM
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[quote=singerjeannie;204786]
Quote:
Originally Posted by singerjeannie View Post
The brand is 1 Day Acuvue Moist. The diameter is the same. I think I may have to call them in the morning and ask about this... I don't want them any tighter! Thank you!
Good idea JJ 8.5 fits like an 8.4.....from experience....so yes def go back to 9.0.
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Old 03-20-2012, 09:11 AM
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Default Let Us Know How it Goes

[quote=luvbostonxo2's;204787]
Quote:
Originally Posted by singerjeannie View Post

Good idea JJ 8.5 fits like an 8.4.....from experience....so yes def go back to 9.0.
Please let us know if a 9.0 base curve feels better for you, singerjeannie.
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Old 03-20-2012, 02:21 PM
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[quote=dragongirl81;204796]
Quote:
Originally Posted by luvbostonxo2's View Post

Please let us know if a 9.0 base curve feels better for you, singerjeannie.
I called my optometrist's office today and indeed, they made a clerical error! My prescription should be a 9.0. They are faxing a new prescription to me this afternoon. I think that's an egregious oversight, if I hadn't noticed I would have ordered a huge supply of lenses and been stuck with the wrong ones! Very irritating, both the situation AND the lenses.

Thank you for your help, truly!
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Old 03-20-2012, 04:09 PM
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[quote=singerjeannie;204818]
Quote:
Originally Posted by dragongirl81 View Post

I called my optometrist's office today and indeed, they made a clerical error! My prescription should be a 9.0. They are faxing a new prescription to me this afternoon. I think that's an egregious oversight, if I hadn't noticed I would have ordered a huge supply of lenses and been stuck with the wrong ones! Very irritating, both the situation AND the lenses.

Thank you for your help, truly!
Its a great thing your "on the ball", as it would be a gong show returning a huge supply of lenses in the wrong base curve.

IF your did wear the wrong base curve you may irritate your eyes and damage the cornea, so yes, glad u caught the clerical error.

Bloody hell!!!
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Old 03-21-2012, 04:48 PM
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[quote=singerjeannie;204818]
Quote:
Originally Posted by dragongirl81 View Post

I called my optometrist's office today and indeed, they made a clerical error! My prescription should be a 9.0. They are faxing a new prescription to me this afternoon. I think that's an egregious oversight, if I hadn't noticed I would have ordered a huge supply of lenses and been stuck with the wrong ones! Very irritating, both the situation AND the lenses.

Thank you for your help, truly!
Wow, talk about a major mix-up! I hope everything works out for you now, singerjeannie.
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Old 05-01-2012, 09:07 AM
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Quote:
Originally Posted by singerjeannie View Post
What are the physical differences between a lens that has a base curve of 8.5 and one that is 9.0?
The base curve is the radius of the sphere of the back of the lens that the prescription describes. If a contact lens with a base curve of 8.5 were extended so that it formed a ball, the inside of the ball would be 8.5 millimeters in diameter. A lens with a base curve of 9.0 is a bit flatter, so it would form a slightly bigger ball.
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Old 06-27-2012, 12:10 PM
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Quote:
Originally Posted by MaryTamm2 View Post
The base curve is the radius of the sphere of the back of the lens that the prescription describes. If a contact lens with a base curve of 8.5 were extended so that it formed a ball, the inside of the ball would be 8.5 millimeters in diameter. A lens with a base curve of 9.0 is a bit flatter, so it would form a slightly bigger ball.
If you put these lenses side by side you may not be able tell the difference...but thru way they move.center.and position on the cornea. We would be able to tell.
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