Yes if the scarring is centrally on the cornea and it is affecting the vision then your daughter can go for keratoplasty. But before that it has to be ensured that the retina of this eye is fine so that after the surgery the vision is good. Since the retina of other eye is detached this is a good option to give your daughter vision. Thanks.
Follow-up questions, if any, are most welcome.
Are you sure the scarring is on retina? If that is the case then you should get that also done but the prognosis may not be that good. It must be involving the macula as your doctor is saying that it is involving the central area. It could be an ERM or something. However, I also feel that you should go ahead with this surgery though you can get a second opinion from a retina specialist by visiting him in person as examination is important. Thanks.