In order for a doctor to advise on the best course of treatment for you, you will require an in person consultation.
There are many methods of ptosis correction surgery available. The best method for you will depend on how severe the ptosis is and how invasive the approach you are comfortable with.
Ptosis can be corrected using incisional methods or partial incision methods. The surgery is done under local anaesthetic. It may be medisave claimable, but only if your vision is obstructed. In Singapore, this will need to be verified by an ophthalmologist. Hope this helps.