Question about my welding helmet

[scherp69]

I have a Miller Elite welding helmet, it's the inferno on this page: http://www.millerwelds.com/products/...helmets/elite/ When I first got it, it worked great. I had to change the battery on it last year. When I'm using it, this morning for example, it's detects the weld like it's supposed to, and when I'm done welding and it turns off like it should, however I have a hard time focusing. I've never welded with anything other than this helmet so not sure what to compare to. Should it be that hard to focus my eyes after welding? I have the sensitivity setting set to a little more sensitive than where the arrow is and it's set to the darkest shade. Any suggestions? Thanks in advance.