Why Is One Of My Eyes Higher Than The Other?

When I was putting in my contacts today I noticed that my right eye ball is higher than my left. Why is that? I am near sighted in my left eye and I have an astigmatism in my right.

My Left Eye Is Bigger Then The Right,and My Prescription On The Left Is Higher Compared On The Left?

doest that might have caused my eye bigger then the other? because of prescription and astigmatism…?