By the way (in case there was any doubt), Mireska did follow through on her promise to heal the sniper prisoner's blindness once the Jedi group returned to the GAR garrison. That was part of Mireska's block of time spent in Medical after their return. (Before the lightsabre crafting.)
Do you want me to roll for Critical Injury removal? She'll have two opportunities: one with a mundane Medicine skill check, one with an otherwise successful combined Heal power/Medicine skill check (i.e., the Heal power has to be properly activated before the accompanying Medicine check is possible).