My eyes are different shapes, sizes and at different heights. What can be done about this? (Photo)

There are subtle differences in the two eyes. However, you are deeply wrong in believing that this is noticeable by other people. It is not. We do live in a sick world. If you knock on enough doors, someone will offer you surgery. Surgery will not fix the issue. However, it is very likely to make things worse. This fixation on subtle differences like this and feeling it is undermining your "low self-esteem" is not normal. Surgery does not fix this. What helps in psychiatric and psychological intervention offer real help for body dysmorphic disorder. A lack of insight into the problem is an aspect of this condition. Mental health professionals can give you tools to change how you think and understand you feelings. Don't chase surgery here, it is expensive and harmful. Reach out and find mental health care where you live.

Based on these photos, you have a mild asymmetry, completely normal; no surgery should be considered. Make up, eyebrow shaping, may be the best way to deal with this issue. Good luck.