Passage: As a pativratha (devoted wife) without parallel, Gandhari is regarded as an epitome of virtue, and is among the most respected moral forces in the epic. She was not only married to a blind man, but at the time of her wedding, she resolved to spend the remainder of her life as a blind woman herself, in order to share the debility and pain of her husband. For the rest of her life, she kept a cloth tied to her eyes and thus deprived herself of the power of sight. At certain critical junctures, she gave advice to her husband which was impeccable from a moral standpoint; she never wavered in her adherence to dharma (righteousness), even to a very bitter end. She was fated to witness the death of all her hundred sons within the space of 18 days, during the Great War between them and their cousins; she also curses the lord Krishna when she was full of sorrow on the death of her 100 children that his vansh (Clan) would also be destroyed in the same manner as that of her. She then retired with her husband to spend her last days in a forest hermitage.

Question: What did she deprive herself from for the rest of her life?
power of sight