Sightless
Sightless , adjective
1.
Lacking sight; without sight; blind.
Of all who blindly creep or sightless soar.
2.
That can not be seen; invisible. [Obsolete]
The sightless couriers of the air.
3.
Offensive or unpleasing to the eye; unsightly; as, sightless stains. [Rare] — Shakespeare