Possible Clues:

• It helps one to see Greek wine contains no sulphur
• What's behind the humour about a girl
• Back of eye
• Site of some cones
• Light-receptive part of eye
• Tear in (anag) - part of the eye
• Concerned with metal with a sensitive part of eye
• Where rods and cones are
• How I rent a thing I have at the back, by the sound of it
• You've got it in your eye, or near about it