I just found out that the Panoptx (7Eye) glasses, at least the Whirlwind model that I have, now has foam pads with lenses. To translate, you can now buy the foam pads with lenses inserted, to wear behind the regular lenses. Result is a much darker lens. I went to have my foam replaced since it's ripping apart. When the gal at the dealer went to see if they had another foam piece in stock, what she pulled out had sunglass lenses inserted in the foam. I think they wanted $35 for the foam with lenses. The lenses are removable, so you can still have the foam inserts with just the regular lens in use, or pop them in and you are using 2 lenses. I haven't really had much problem with the darkness of mine, so I opted for just the replacement foam. But just in case anyone wants to make their glasses darker, they do have the option available.