Here, check these out:
Amazon.com: Buying Choices: Bondhus - L-wrench - Hex, Long, .035in. - 15901
Wera 2054 0.035" x 40mm Kraftform Micro Hex Precision Screwdriver
If you can't find this thing locally (you'll need a specialty shop, then you can get them online. You should definitely be able to fix that third arm where the hinge is coming out. With the second one, I'm not sure how that epoxy's gonna hold. You have to have the hinge working or the glasses are useless, I think. Good luck.
Amazon.com: Buying Choices: Bondhus - L-wrench - Hex, Long, .035in. - 15901
Wera 2054 0.035" x 40mm Kraftform Micro Hex Precision Screwdriver
If you can't find this thing locally (you'll need a specialty shop, then you can get them online. You should definitely be able to fix that third arm where the hinge is coming out. With the second one, I'm not sure how that epoxy's gonna hold. You have to have the hinge working or the glasses are useless, I think. Good luck.