I have just received my new glasses from the lab. I have prism incorporated in my Rx (1 base up OD and 1 base down OS).
The lenses i have ordered are Nikon NL4 AS (n=1.67). The lab have decentred the lenses to achieve the prism. Is this a correct method of doing it or should they have worked prism, considering the lens is an aspheric?
Many thanks.
Yahya
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