"sightless" is a correct and usable word in written English.
You can use it to describe a person who can not see or a thing which can not be seen. For example: "The sightless man stumbled his way across the park."
The American army said it needed evidence before a complaint could be processed, including the name of the officer in charge, which sightless detainees invariably could not provide.Requests from human-rights groups and journalists for access to the jails were routinely dismissed.
When he was 15, he worked out an adaptation, written with a simple instrument, that met the needs of the sightless.
Its members are known as caecilians, a name derived from the Latin word caecus, meaning "sightless" or "blind".
As anyone who has read Wyndham's novel, or seen either of the filmed versions, will know, the tale begins with a temporarily sightless Bill waking up in hospital and discovering that, while his eyes had been bandaged after a run-in with a baby Triffid, most of the rest of humanity has gone blind from watching a dramatic meteor shower (changed to a solar storm in this version).
This barbaric act, which left Linda nearly sightless, wound up tying her and Burt together for life.
Yet when a patient is admitted with a knife lodged in his eye, and the resident doctor seems to balk at the task ahead, it is Georgie who calmly removes the knife: he restores sight to the sightless.
Even when they're looking out front, they appear to be sightless.
She made progress for six months, until an eye inflammation left her virtually sightless for several weeks.
You can see references to the heroic pose with which two men end a duet in "Agon" (1957); the partnering device whereby a woman is folded in half and revolved before opening out anew in Ashton's "Dream" (1964); and even one of the strangest images from "Symphony in Three Movements," in which the woman holds her hands (palms out) before her eyes, as if sightless.
In 1920, the Frenchman Honoré Barthelemy rode the Tour with a broken shoulder, a dislocated wrist and an injured eye that left him nearly sightless yet finished eighth.
This model isn't reclining happily, or curled up asleep; she is flat on her back, hair partially covering her face, with the stiff, sightless demeanour of a body in the morgue.
