A handy one-page PDF outlining VELs entire product offering within poly, 1.70 high index, plastic and glass in numerous treatments. To order a printed copy, visit vision-ease.com.
How does add affect the corridor (for want of perhaps a better term). We're all aware a +2 add vs a +3 add in a PAL is going to have reduced channel width, does the NAL also experience a similar...
So I've always wondered.... What is up with the W. Wollaston base-curve lens series? It gets mentioned in almost any base curve tutorial without any further satisfactory explanation. You mean to...