BI/BO Prismatic Flipper

Prismatic Flipper, Base In/Base Out (BI/BO), with case. 

Symmetric (PD BI = PD BO): 2, 4, 6, 8, 12, 16 y 20 Prismatic Diopters.       Asymmetric (PD BI  / PD BO): 6/24 , 8/12 , 12/20 and 16/24. P.D. 

Each lens is engraved with its prismatic power and the orientation of the base. 

The values of the flippers are expressed by the resulting effective prismatic power (SUM of the prismatic value of the two lenses adapted either BI or BO). 

Examples: 

                 Symmetric 6 BI/BO: 

                                                      - Two prismatic lenses BI of 3 P.D; total effect: 6 P.D. BI. 

                                                      - Two prismatic lenses BE of 3 P.D. ; total effect: 6 P.D. BO.

          

                 Asimmetric 6 BI/24BO:

                                                       - Two prismatic lenses BI of 3 P.D.; total effect: 6 P.D. BI. 

                                                       - Two prismatic lenses BO of 12 P.D.; total effect: 24 P.D. BE.

Make your own KIT: 5% discount with the purchase of 5 or more prismatic flippers, and we Will inbclude our support for 10 pcs.  The offer Will be applied on the final invoice (not visible in the on-line document).