Quote:
Originally Posted by Jayems
So I want to order contacts and glasses online. I got my prescription from the optometrist, but it's asking online for power (contacts).
But on the prescription, it's just a bunch of numbers that end in either x100 or x070. (I assume Sphere, Cylinder Axis?)
How do I figure out what my power is?
Underneath, it says:
K Readings
OD:
OS:
But both are blank.
As well, the contacts I want to order say BC 8.7 on my prescription, but online, it says BC 8.6 with no option to change. Is that an issue?
For glasses, it's asking for my PD. That's not on my prescription either. I know what it is, but the optometrists office doesn't want to give it to me over the phone, which is terribly annoying because I don't want to go back there just for that.
|
First number is the sphere prescription, second is the astigmatism, third is the axis (location of the astigmatism).
Do not worry about K readings (shape of the cornea) as they do not have much effect on new contacts that are mostly one size fits all.
Honestly, if you switching brands of contacts i would recommend getting a proper refit done at the Optometrist. IT may cost a fee but it ensures you are in the proper contacts. Be upfront about the fact you want to buy online and bring in the quoted prices from the website. Most places will happily do the fitting and give you their best price. We as Optometrists care more that you are in proper fitting contact lenses, than where you got them from.
Finally, it is not a legal requirement to provide a PD with a prescription. You can usually pay a small fee to get a proper measurement done. Or, as Rathji said, try the online tools available on these websites.