I took cert classes in contacts and have never dove without them for 33 years. First soft lenses and now RGP's. I just closed my eyes to take my mask off and put it on. If I ever have to find it I'll open my eyes but till then I'll close them. If I lose my contacts I'm really blind. I sometimes lose one in the mask during a dive and just deal with it till I am back on the boat. So far I have always found them in the mask afterwards, but one did get blown away in the wind after I found it.