Is there anything I can do to make my eyes the same size? (photo)

According to your pics your asymmetry comes from the facial bones, your left side is slightly higher than the right side. It is a very common deformity. 

Your cheek bones are very asymmetrical, most receding on your left half face, giving bad support to lower eyelid with scleral-show.

Mesenchymal stem cells could help or cure.

Hello 

There are many things that can cause the uneven or asymmetric
appearance you are seeing.  First it is important to determine if the bony
structure around the eye or the
tissue behind the eye has been changing.  This could cause one eye to look
sunken or the other to look prominent.  You have some asymmetry
in the soft tissue or the eyelid itself and this can cause one to look
asymmetric.





The first step is to seek an opinion from an oculoplastic
surgeon as to the cause of the asymmetry and make sure it is not behind the
eye.  But yes there are many options depending upon the cause

It is normal to not be totally symmetric. We are always our worse critic and this asymmetry is most likely only apparent to you.

Dean Vistnes.Vistnes Plastic SurgerySan francisco Bay Area