Hi,

Total power including the cylinder is  -20.00. Add the sphere to the cylinder to
get the total power if the Rx is written in minus cylinder, ignore the cylinder
power if written in plus cylinder. For instance -20.00 +2.50 is ok, -20.00 -2.50
is not. I'm not sure if there is a maximum cylinder power restriction. If you
are under 4.00 you should be ok.

This lens has been removed from the US market.

Hope this helps,

Robert Martellaro
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Optician/Owner
Roberts Optical
robopt@execpc.com
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"An expert is a person who has made all the mistakes that can be made in a very narrow field."
 - Niels Bohr