One eye lower than the other. Can symmetry be improved? The angles they sit aren't congruent. Can that be adjusted? (Photo)

Thanks for your photos, but further cephalometric information is needed with additional photos and measurements.  All photos show the left ear is lower than the right and this may be due to head tilt or spinal alignment issues.  Your bite plane would be also helpful to analyze.  The asymmetry may be due to earlier trauma as suggested by other colleagues posting, but further in depth evaluation is needed to offer treatment options, some of which may be too aggressive for your situation.  Do further research with board certified plastic or oculoplastic surgeons before committing to any procedure.

The left eye sits a little lower than the right side. You also have upper eyelid ptosis. I do not believe you need to run out and lift the left I. It is actually not something that other are particularly aware of. However, the upper eyelid ptosis is another issue. I thing that should be addressed. Surgery is needed to improve this symmetry. I recommend a detailed, in person consultation.

Thank you for sharing the photos and history.So it appears your left eye is lower than the right and I think you're aware of that.  So you've got a few possibilities here.  One, as Dr. Speinstar mentioned you could have and an orbital floor fracture that was untreated in your younger days resulting in enopthalmos (sunken eye).  But the entire orbit and eye appear lower on the left than the right.So possibility number two is there's simply an asymmetry in not only the volume or size of your orbits (eye socket) but one is simply situated lower than the other. Patients often have this from birth but it become progressively more noticeable as we age.You're looking good and still a handsome dude.  Go out there and keep enjoying life!  You're looking good!