For one patient, this was the first time he had seen anything in half a century, after his sight was destroyed by retinitis pigmentosa, a virus that attacks retinal cells.
For one patient, this was the first time he had seen anything in half a century, after his sight was destroyed by retinitis pigmentosa, a virus that attacks retinal cells.
其中一个盲人，自从他的视力被色素性视网膜炎（一种侵袭视网膜细胞的病毒引起的）所损坏后，这是他半个世纪以来，首次有了视觉。