Satyavati had summoned Veda Vyasa for the process of ‘Niyoga’. After he arrived, Satyavati sent him to Ambika’s Chambers. As he had meditated in the forest for a long time, he had a scary appearance and when Ambika saw him, she closed her eyes in fear.
Vyasa informed Satyavati that the child born would be blind since Ambika closed her eyes, she assumed that he would not be able to become a king since he was blind.
So, she sent Vyasa to the Ambalika’s Chambers. Ambalika as informed, did not close her eyes, but she grew pale seeing his appearance.
Soon, Dhritarashtra, who was blind was born to Ambika and Pandu, who had a pale complexion was born to Ambalika. Satyavati invited Vyasa again, and asked him for another child, and sent him to Ambika’s Chambers. Ambika remembering his scary appearance sent her handmaiden, Parishrami. She considered it as her duty, so the child born to her was healthy and wise and was named as Vidura.