Since the start of the series, after the Sharingan and Byakugan had been revealed, Kurenai's eyes seem kind of different from normal eyes and more like the Doujutsu.
During the attack of the Nine-Tailed Fox on Konoha, her father appeared for the first time in the story. He too possessed similar patterns in his eyes.
So is it some kind of Doujutsu, do her eyes have special abilities similar to the Sharingan or Byakugan, etc.?