I'm in the "business" from few months... I'm a student also.


I notice that sometimes OMD write the PD on the prescription (taken by autoref)
Why is often a wrong value??

I notice also that when I take a PD patient with autorefractor it is wrong (usually too large)

what am I doing wrong with the autoref?????


So I always check marking the frame with a felt tip pen and re-check with the "pd meter"