I have one eye smaller than other it feels heavy now. Is this a deformity? (Photo)

my eyes have felt heavier when i look straight forward i seem to feel like one eye is higher than other. Its a strange feeling. I Got my vision checked and everything came out perfect. Is it a deformity? How can i fix it. It makes me very uncomfortable & self conscious. Some days it seems to be more noticeable than others to me. I can also see as if one crease is smaller than other and oddly the one i feel heavy is the bigger eye the one on the left & i know the one on the right has a droopy lid