"Then look again twice"—one time after another. "Your vision will return to you"—it will come back to you.
﴿ثمَّ ارْجع الْبَصَر كرتين﴾ مَرَّةً بَعْدَ مرةٍ ﴿يَنْقَلِبْ إِلَيْكَ الْبَصَر﴾ يرجع إِلَيْك