Related Clues:

• Back surface of eye
• Membrane that can become detached
• Cover for organ of sight
• Part of eye
• It blinks
• The blinking thing!
• Get one in the eye when 'E is involved in a train wreak
• Light-sensing eye part
• It's often closed for the night
• It's the background light near it
• Egyptian leader distributed yield from pupil's cover
• Open's one's eyes perhaps to me, say, on cover
• Place for rods
• Batted body part
• Only externally visible part of the central nervous system