Ashtangasamgraha 14.41

14.41

sakaṇḍu ca kramādraktamāṃsamedassu cādiśet |

varṇenaivedṛgubhayaṃ kṛcchraṃ taccottarottaram ||

sirāśukravacca śastrakarmādividhineti |

bhavati cātra ||

And with itching; in order, one should assign [them] to blood, flesh, and fat.
Both are of such appearance by color alone; and that is difficult to cure progressively.
And just as in corneal vascular opacity, [it is treated] by the regimen of surgical operation and the like.
And here it is said: