So I am curious to other peoples opinions on the newest personalized freeform lenses being produced. Here is my question. A zeiss rep , promoting the new Zeiss Individualized 2 lens, stated that the lens are accurate to 1/100 D. Further, these lenses can not be verified for accuracy due to the manipulation and altering of the prescription. Due to the "personalization" of the lens, there is no table or conversion which can be used to determine accurate final power(at least for the optician to check). I do think the labs manufacturing these lenses are accurate, but I also think it is an important job of the optician to be able to inspect the eyewear before dispensing. When asked how to verify the glasses, the Zeiss Rep said to round to the nearest .25. When asked if there are higher deviations from the original prescription with higher powers, the Zeiss rep said he was not sure. If it is a high Rx, is the dr.'s Rx altered by more than a .25?
Question: Doctor uses a standard phoropter to determine subjective prescription. Optician uses pupilometer which can be off by a mm. No vertex, wrap, or touch points notated. Prescription verified with a lensometer. How valuable is the accuracy of lens manufacturing when no other equipment in the office can even approach .12 D accuracy?
The one true option is to automate refraction, measuring, and verifying. The true digital office. Goodbye Doc! How many opticians have a true digital office? And is this level of accuracy really necessary or is it just precision for precisions sake?
I guess the question was a bit of a ramble, but thoughts are appreciated, thanks!
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Originally Posted by Johns
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