simple past tense and past participle of sight
"After spending years blind, he finally saw his daughter for the first time when she was brought to him by doctors who had recently sighted her."
able to see
"After years of living as a blind person, she felt overwhelmed when her new job required her to be fully sighted during safety inspections."
Having vision, not blind.
"After spending a morning in complete darkness, it felt strange to be sighted again when I opened my eyes."