How about making up a small Rx pad/Post-It note type thing, with the Prentice equation printed on it, and a small line for the Bi-PD on the bottom. Then you can ask the patient to figure out their own decentration, and of course to measure and quantify their amount of induced prism on their own when their net glasses come in.
Simple.
But, of course, there will be a cost to your office to have such a pad printed - to give out the information needed to assure a patient's glasses are perfect can be viewed as a courtesy. But those printing costs must be recovered. That will be $25 bucks please. Thanks for stopping in today!
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