An uncommon, but visually dramatic body modification in the Cosmic era
Lavish glade and lush green field,
Wizen'd oaks; to the blight all yield.
Weeping trees of crimson blood,
the Fields of Flesh turn life to mud.
Will you tread and smile and sleep
where devils dance and angels weep?
There is a land where every person wears spectacles. Those without eyeglasses are considered to be the lowest stratum of society, so adventurers without glasses are treated like outcastes. It certainly would explain those heroes wearing sunglasses for no apparent reason...