I can imagine a glass eye being very heavy. I have two fake eyes, both plastic. Neither was cheap, but both have been excellently made. A real craft. The thing

I can imagine a glass eye being very heavy. I have two fake eyes, both plastic. Neither was cheap, but both have been excellently made. A real craft. The thing that required most attention was fitting them… shaving them down to fit my interior prosthetic. That took the best part of two hours.