Forum:Stuff isant appereing wen i breake it\ kill it

HELP!!!!!

i was playing terraria a few seconds ago and i went to my "mini forest" and choped some wood( evorything good here) it turned to night, zombles came, killed them, demoneyes came, killed them, but when i killed them they dident drop any lenses, and then i dyed and spaned back home, i nocked out some glass from my window and, nothing...

i cheacked my inventory, no glass?

wat going on?