Question

Consider a topic lens whose two surfaces are spherical and toroidal. The spherical side has a power of +4.0D, while the toroidal side is described by +6.0 x 90/ +2.0x180

a)determine the power cross

b)find the sturm interval for a point object at 20 cm from the lens

Answer #1

Consider a toric lens whose two surfaces are spherical and
toroidal. The spherical side has a power of +4.0D, while the
toroidal side is described by +6.0X90/+2.0X180 A)Determine the
power cross B) Find the Sturm interval for a point object at 20cm
from the lens

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1. How is the image formed by the mirror different from the
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