According the Eyeglass Rule, eye doctors are required to give a copy of the prescription after an eye exam. But the tricky part is that this rule does not determine whether the eye doctor should include the PD, pupillary distance or not.
As we know PD is essential and decisive in fitting the lenses into the frames while customers are buying eyeglasses online. Then what is a PD? What does PD stand for? Here is the answer.
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