I made a pair of glasses for one of my customers.
Its a simple pair of FT28 CR-39
OU +6.00 with 4.00 add
She could not see out of them so she went back to her MD. MD checked the glasses and told her that the add is wrong.
I measured the add its 4.00
I called the dr.
He measured the add from the front.
I thought that we check the add from the back side!?
Who is wright?