Oculus
BK Series

Description
Lenses in the BK line have a housing diameter of 38 mm (lens diameter 21 mm). For use with trial frames UB 3, UB 4, UB 6 and practice frames.
Lenses in the BK line have a housing diameter of 38 mm (lens diameter 21 mm). For use with trial frames UB 3, UB 4, UB 6 and practice frames.