Section - Body parts
The eyes are a plural-named openable container. The eyes are part of the player. The description is "You've had them for as long as you can remember." Understand "eye" as the eyes.
Instead of inserting something into the eyes: say "It's all fun and games until someone loses an eye." instead.
Instead of dropping the eyes: say "No. You need those to see."
Report closing the eyes: say "You close your eyes." instead.
Report opening the eyes: say "You open your eyes." instead.
Before doing something when the eyes are closed:
if the current action is opening the eyes or touching the crack:
continue the action;
try opening the eyes.