Is there any correction surgical or otherwise for aniscoria?

There is no simple way to fix the difference between the pupils. If the cosmetic aspect is a concern, colored contact lenses (with equal pupil sizes) may help your eyes look more even.

First, no, there is no surgery that fixed the iris.  Occasionally, the trauma to the iris is so severe that the iris needs to be reconstructed.  These are seldom never so good.  This is not cosmetic surgery.  A much bigger concern is the development of glaucoma in an eye that has sustained this type of trauma.  You need to be followed carefully by an ophthalmologist.

There are a couple surgical techniques to fix this, but they all have very serious risks associate with them and are generally not advisable. The easiest and first option would be to see an optometrist to help fit you with special contact lenses. You should also be monitored by an ophthalmologist, as you are at risk for developing glaucoma. There happens to be an excellent glaucoma specialist in your town!