On the still images you can see where the crossing point of the lines is located.
The right lens has vertical prism, 0.50ΔD BD. And the left lens has vertical prism, 0.75ΔD BD.
Because the two are both BD, Base Down, you can subtract the lower prism from the higher to get total vertical prism for the pair. The difference is 0.25 ΔD BD. It meets standards for progressive lenses.
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