I has notice that some ophthalmologist does not know how to measure a multifocal.
I had one complaining that the lens had a unwanted prism. He was measuring the prisms where the far distance prescription is measures.
Another complained that the far distance prescription was wrong. He was not measuring it where it has to be measured.
The real fact is that measuring PAL is not as easy as measuring bifocals. It takes more time to locate the areas where the measurements should be made specially if they do not have the steaker for that multifocal.
The message i want to send is that if you do not know how a multifocal should be measured or do not want to take the time to do it right then do not do it because you are telling the patient something that is not true.
Is there a simple and generic guide about how to measure any multifocal made for people that do not know too much about optics ? I am going to talk to them and would like to give them the address where they can find more information that would reinforce my explanation and one of this address should be that guide i am looking for (if exist).
Here in Panama there are no Opticians. We Optometrist can do by law the job of an Optometrist and the one of a Optician. So we have to deal whith prescritions made by ophthalmologist.
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