
Vyasa’s curse to the first widowed wife of his half brother on the son to be born to them. His mother [Satyavati] had asked him to produce heirs to the throne with the two widows of his half-brother. The first princess closed her eyes as Vyasa was in fearful ascetic condition when he slept with her. In due time Dhritarshtra was born blind. Quoted in p. 58.
Sources, Seer of the Fifth Veda: Kr̥ṣṇa Dvaipāyana Vyāsa in the Mahābhārata