Possible Clues:

• Eyeball cover
• Part of eye in centre of head behind ears, perhaps
• Reporter's relatively hackneyed cover for The Observer
• It helps people focus
• Helps you see decor nearly finished within
• It's reshaped by Lasik surgery
• My new beau, naked, is a bit of a looker
• Part of eye with ear, ear cut
• Iris coverer
• Organ part not primarily observed in heart area