Your could easily solve your problem in RDS MFM or Vertex modeler in Carrara, but you have ruled yourself out of those. I would just pick the proper plane and slide the verts down next to each other at the eyelid. Set the attraction tool to 0.1 pts select the one vert option. Is it that you can not get in or that you do not own these programs? I will admit that the MFM seemed to have a near vertical learning curve for me at first.