When excess skin on the upper lids is significantly blocking a large percentage of the visual fields, a medical insurance company may cover it. Medical necessity has to be documented at the time of consultation and examination. This involves submitting pictures of the eyelids, examination/consultation reports, and visual field obstruction test which document the interference of vision. Once medical necessity has been met, preauthorization is performed with the medical insurance company prior to the surgery itself. It is also best to check with your Medical insurance handbook for inclusions and exclusions.
It is possible that your insurance may cover this procedure, but each insurance plan has specific criteria that must be met first. This could involve submitting visual field test results, photographs, doctors' notes, and even having a peer to peer phone conference between the insurance company and your physician. The best thing to do would be to go through your surgeon's office....they usually have been through this process numerous times before.