Reading contact lenses in the office

[eyeonyou]

Hi all!
It might sound odd, but this got me quite surprised when I saw happen...
Can you tell me if it is possible for an optometrist to read the prescription of hard contact lenses using an ordinary glass lense equipment?!?!?!?!?
Thanks so much!

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[rpames]

That is exactly how you do it.

 

[eyeonyou]

Really? Well that changes my perception of a few things.... Thanks!

 

[eye_candie]

yup, i was doing that last week.

Hi all!
It might sound odd, but this got me quite surprised when I saw happen...
Can you tell me if it is possible for an optometrist to read the prescription of hard contact lenses using an ordinary glass lense equipment?!?!?!?!?
Thanks so much!

 

[Ryan_eyeball]

It's much easier to do it with a RGP than a soft CL. It can be done with a SL but much more difficult and not as accurate. I'd say for a SL, you'd usually be within 0.50 to 0.75 of the true Rx of the CL. One of my rotations could even do torics, but I don't remember how they did it.

 

[rpames]

It's much easier to do it with a RGP than a soft CL. It can be done with a SL but much more difficult and not as accurate. I'd say for a SL, you'd usually be within 0.50 to 0.75 of the true Rx of the CL. One of my rotations could even do torics, but I don't remember how they did it.

Do you mean toric RGPs? If you do, all you do is read the values right off the lensometer. Eg. If you clear the first mires at -1.50 and the second ones at -3.50, you right down -1.50/-3.50. You don't have to subtract or anything like on a regular lens, just right down the numbers off the wheel. There is no axis of course since you could put the lens on the instrument at any axis you wanted.

 

[Ryan_eyeball]

Do you mean toric RGPs? If you do, all you do is read the values right off the lensometer. Eg. If you clear the first mires at -1.50 and the second ones at -3.50, you right down -1.50/-3.50. You don't have to subtract or anything like on a regular lens, just right down the numbers off the wheel. There is no axis of course since you could put the lens on the instrument at any axis you wanted.

No they "told" me it was for Soft torics, but I doubt it was accurate at all. It was Koetting Associates here in st. louis and all they do is Contacts pretty much. I only saw them try it once, so i don't know if was anywhere close to accurate.

Yeah RGP bitorics can be read with accuracy.