and sin2
. Curve sin2
closely
approximates changing power of a cylindric lens at each meridian. (Int Ophthalmol
Clin 11:131, 1971) |
|
|
Fig. 3. Curves generated
by functions sin
and sin2
. Curve sin2
closely
approximates changing power of a cylindric lens at each meridian. (Int Ophthalmol
Clin 11:131, 1971) |