State the surface powers required to produce the following lenses with +6.25D front curves.
a. -0.50 DS
b. +0.50 DS
c. +1.75 DS
1 answer
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a. -0.50 DS
b. +0.50 DS
c. +1.75 DS
1 answer
2 answers
0 answers
1 answer
1 answer