Under non-sequential mode, you may use OSDx
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Toroidal Lens which support aspheric surface ,]\: ]Y&?
'(4#He?Gd
or you may use Biconic Lens if you make use of conic constant alone to create aspheric surface. M.loG4r!
V.f'Cw
Hope this would help, bu tbear in mind that diffraction effect is not modelable in non-sequential mode.