CHICAGO — Illinois regulators have confiscated $1,600 worth of novelty contact lenses aimed at the Halloween market because they are illegal to sell without a prescription.

The Department of Financial and Professional Regulation announced Tuesday that a convenience store in central Illinois surrendered more than 40 boxes of the non-prescription lenses.

Department spokeswoman Susan Hofer says a school nurse tipped off regulators after a student suffered an eye injury caused by the lenses. Hofer says some confiscated lenses are solid yellow or solid black, and some have eight ball or flower patterns.