Are Kurenai's eyes some sort of Doujutsu? 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.?
Actually they are not ke-ke-genkai. In this wiki at the latter part said that:


  Although her eyes are very distinct, they are not a dōjutsu.


Dōjutsu (瞳術; English TV "Visual Jutsu"; Literally meaning "Eye Techniques") are genetic ninja abilities that utilise the eyes, granting the wielder ocular abilities. Being a by-product of specific kekkei genkai, dōjutsu are not classified as one of the major jutsu types.