This is the lowest amount in the NHL and they are the only team below 50%.
According to my research players that do wear a visor are: Artem Anisimov, Ryan Callahan, Erik Christensen, Marian Gaborik, Brad Richards, Derek Stepan, Wojtek Wolski, Michael Del Zotto, Steve Eminger, Ryan McDonagh, Michael Sauer and Anton Stralman.
The ones who don't are Sean Avery, Brian Boyle, Andre Deveaux, Brandon Dubsinky, Ruslan Fedotenko, Brandon Prust, Mike Rupp, Dan Girardi, Marc Staal, Jeff Woywitka.
Brandon Dubinsky has said that he doesn't ever want to wear a visor.
I have 12 Rangers out of 22 wearing a visor which is 54% and moves them out of 30th place and into 29th place. Six forwards do and six forwards don't, not counting the injured Wolski and Rupp. Five of the defensemen playing on the roster wear a visor and two, plus Staal, don't.