Hoya vs Nikon SV

[buckeyefan]

We just added a Hoya account and phasing out Nikon. I have a pair of Nikon SeeMax SV 1.74 and I absolutely love them. I am a -6.00 OU and wear contacts most of the time. But these lenses are great. There is no distortion and no adaption for me at all. I recommend them to all patients with high scripts and there have been no complaints. What Hoya SV lens is most like the Nikon SeeMax SV? The SV iQ or iD SV? Or is there an Essilor SV lens that is better than Hoya? Also how does Hoya's HiVision EX3 compare to Nikon's SeeCoat plus? I personally prefer the SeeCoat plus to Avance. Thank you for your input!

[Steve Machol]

<Moved to a more appropriate forum.>

[sharpstick777]

In SV although there is a difference between brands of the aspheric design, its hard to pinpoint exact what it is. There are two main types, button and full field, and different algorythms used on each.

As far as I know Seiko is the only one who has explained their SV Aspheric technology to some degree. Right now Aspherics are just trial and error unfortunately. Because the math is a tightly held secret its unlikely we will hear more anytime soon.