title: A Prototype External Magnetic Eyelid Device for Blepharoptosis.
abstract: OBJECTIVE
  To test a prototype magnet system (magnetic levator prosthesis) for the ability to comfortably and non-invasively provide eye opening with maintenance of the blink in people with paralytic ptosis and determine preliminary efficacy for short-term clinical application.
  
  
  METHODS
  The prototype device consisted of a magnet on a spectacle frame and a micro-magnet array mounted externally on the eyelid. Participants with unilateral CN III palsy (n=3) trialed the predicate (ptosis crutch) and magnet device. Video analysis was used to quantify changes in eyelid opening and subjective responses were documented with a rating scale. A 20-minute and then a 1-week trial were offered.
  
  
  RESULTS
  The magnetic levator prosthesis device was effective to provide eye opening while allowing, at minimum, a volitional blink without ill effects on the eyelid skin or ocular surface. Comfort scores ranged from 6 to 9 out of 10 over 3 evaluations. All patients chose an extended trial of the magnet device and reported continued 8-9/10 comfort and efficacy after the extended 1-week trial.
  
  
  CONCLUSIONS
  Comfortable and effective restoration of eye opening with maintenance of the blink is feasible using external static magnets and warrants further study.
  
  
  CONCLUSIONS
  This is the first careful documentation of the successful use of an externally mounted static magnet system to treat paralytic ptosis.
authors: Vision Rehabilitation Laboratory, Department of Ophthalmology, Schepens Eye Research Institute - Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA ; Vision Service, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, MA, USA.
authors: Kevin E
authors: KE
authors: Houston
authors: Vision Rehabilitation Laboratory, Department of Ophthalmology, Schepens Eye Research Institute - Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA.
authors: Matteo
authors: M
authors: Tomasi
authors: Oculoplastic Service, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA.
authors: Michael
authors: M
authors: Yoon
authors: Boston Keratoprosthesis Laboratory, Department of Ophthalmology, Schepens Eye Research Institute - Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA.
authors: Eleftherios I
authors: EI
authors: Paschalis
keywords: Blepharoptosis; Blink; Cranial Nerve Palsy; Magnetic; Oculomotor Palsy; Paralytic; Ptosis; Ptosis Crutch; Reanimation