O comentário de Valorum está correto: Yennefer realmente perdeu a visão, como nos contou Triss em Blood of Elves , capítulo três:
Damn it, I’m Triss Merigold, the Fourteenth One Killed at Sodden. There are fourteen graves at the foot of the obelisk on the Hill, but only thirteen bodies. You’re amazed such a mistake could have been made? Most of the corpses were in hard-to-recognise pieces—no one identified them. The living were hard to account for, too. Of those who had known me well, Yennefer was the only one to survive, and Yennefer was blind. Others knew me fleetingly and always recognised me by my beautiful hair. And I, damn it, didn’t have it any more!
Emphasis mine, translation by David French
Batalha de Sodden aconteceu durante o conto "Something More", que, creio eu, termina a antologia de