Hering’s Law for the eyelids: There is reflexive descent of the contralateral upper eyelid after the ipsilateral surgical correction of unilateral ptosis. Hering’s law is explained by considering the two eyes as paired organs and it follows that the muscles moving it will work in co-ordination.
Droopy Eyelid Surgery or Ptosis correction surgery is more art than science. I’m sure all Oculoplastic Surgeons agree it is a challenge to treat patients with ptosis. Each case is so different that it is almost feels like you are starting from scratch. While challenging, it is also among the most satisfying Oculoplastic conditions to treat.