Thursday, August 14, 2014

Confusion about Single PD and Dual PD?

Alright, so I'm a little confused about my distance lenses.

I got my prescription saying Dist PD is 30 on both eyes and Near PD is 28. Am I correct in saying that my Single PD is 60 and my Dual PD is 30 and 30 (for each eye), or are they completely different?
Added (1). Basically, if I want to get work safety glasses, what would I tell the optician? Single PD or Dual PD?

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