First a single vision lense set a precise focal length will give the patient better optics and you less problems. But can you imagine trying to juggle 3+ pairs around all day? It sounds like you need to educate your patients more, explain how a PAL works and the basic design, then give them the option of multiple single vision pairs of glasses. I am guessing your patients will prefer just 1 pair with some distortion. As for trouble shooting patient problems, I don't mind, it keeps the optician a skilled member of the medical field and presents the patient with a reason on why they still need us.
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