Ptosis props were originally developed to hold up droopy eyelids. They can also be of benefit for conditions such as blepharospasm, Horner’s Syndrome, Epicanthus and similar lid defects.
A thin bar is attached to the upper rim of the spectacles. This makes contact with the upper eyelid and applies gentle pressure to hold the eyelid open.
They can help prevent unwanted blinking that can be caused by blepharospasm. Ptosis props have enabled people to drive, which would otherwise be difficult due to muscle spasms around the eye.
A Lundi loop is a continuation of a Ptosis Prop which extends the area of contact to the lower lid, for conditions such as Myasthenia gravis.