I would appreciate your PAL recommendations for a moderate plus Rx:
(R) +5.25 / -1.75 x 90 / add 1.75
(L) +3.75 / -1.00 x 83 / add 1.75
The lenses will be going in a full-size frame with a B-height of 35+ mm, so a short corridor design is not needed.
Which lenses use split designs and are NOT totally backside surfaced?
Which lenses have you had great adaptation success with for plus Rx patients?
Which lenses in a plus Rx have the widest corridor in distance, intermediate and reading?
Prescription powers above +3.00 D represent a small percentage of lens sales, so PAL designs tend to be myope-biased. But a hyperopic patient put in the wrong lens design makes for an unhappy patient, optician, and lab. Our PT had been in Nikon SeeMax PALs with great success, but experienced adaptation problems when Nikon switched to a more backsided design in 2010. [Earlier SeeMax lenses had a very complex front surface geometry (think “fun house mirror” curvature), while the new-style Seemax lenses appear to have a factory-molded spherical front.] A change in Abbe value may have also contributed to non-adaptation--the last lenses dispensed used 1.67 index material to cut weight through thickness reduction (prior lenses were 1.60).
This forum has widely scattered and some outdated recommendations for plus Rx PALs. It would be nice to keep a thread updated with current lens choice recommendations as new products are introduced or old ones redesigned.
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