The term 'LENS COVER' can be broken down into two crossword solutions: CORNEA (6 letters) and EYELID (6 letters). The cornea is the transparent outer layer of the eye that covers the iris, pupil, and anterior chamber. It is responsible for focusing light onto the retina. The EYELID is a thin fold of skin that covers and protects the eye. It also helps to keep the eye lubricated by spreading tears across the surface of the eye. Together, the cornea and EYELID form a protective barrier over the LENS of the eye.