I gather that
Deer Creek - Flash Intro now have a new & unique range of realistic "crystal eyez" that can be found via a link to their blog which is on-site.
Eyes that come attached to a backing paper with a self adhesive back should really be fixed with an epoxy type adhesive to ensure that they stay put. However deercreek now also have a specialist adhesive that saves a lot of time & waste etc. It's nearly twice as strong as most superglues, dries fairly quickly, remains water-resistant as well as being flexible & easy to apply.