Covering of the eyes

occurs only in Gen. 20:16. In the Revised Version the rendering
is "it (i.e., Abimelech's present of 1,000 pieces of silver to
Abraham) is for thee a covering of the eyes." This has been
regarded as an implied advice to Sarah to conform to the custom
of married women, and wear a complete veil, covering the eyes as
well as the rest of the face.