I am considering having genioplasty to ‘mask’ my jaw/chin asymmetry (Photo)

If your bite is good, and you have no other jaw issues, then I agree jaw surgery would be unnecessary. I think that a genioplasty with potential jawline contouring would greatly improve the asymmetry and get you the results you are looking for. Your chin would be brought down, and slightly forward (unsure of what your side profile looks like). We will secure it into a position that best reflects your facial structure and creates better symmetry. Once secured, we can go in and contour the chin and jawline to get you the best results possible. Our office provides morph simulations of expected outcomes if you are interested in scheduling a consultation.

All people have facial a symmetry, and you don’t have any more asymmetry in an average person.
If your goal of having surgery is the correct asymmetry, then I suggest you skip having surgery.
Facial symmetry is not an aesthetic ideal. Computer generated images of perfectly symmetrical faces are not considered more attractive or appropriate. Because human brain is fully accustomed to seeing the human face as being quite asymmetrical, since 100% of people have a symmetrical faces. During embryological development, the two sides of the face develop independence from each other, and eventually fused in the midline. For this and many other reasons, the face is not symmetrical. The entire body and all the internal organs are asymmetrical as well. Most people are either left-handed or right, handed. Great artist throughout time have Inc. natural asymmetry in classic works of art.
Asymmetry by itself is almost always based on bone structure and it’s best left untreated unless it’s so severe it becomes obvious to others, which yours does not.
Best,
Mats Hagstrom, MD