Magnetic systems for tarsorrhaphy

Anne Barmettler, Nadee Nissanka, Mark I. Rosenblatt, Rohini Rao, David Lipson, Gary J. Lelli

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Purpose: Paralytic lagophthalmos can cause exposure keratopathy. Current treatments have difficulties: extrusion, migration, allergic reaction, anatomical disruption, and technically difficult surgeries. The goal of this study was to design, create, and assess a new method for eyelid closure using magnets. Methods: This experimental study is approved by institutional review board. Creation of eyelid model and magnet systems: A model of the eyelid and eyeball was constructed to determine the necessary magnetic strength. Neodymium magnets were cast in silicone mold carriers. Assessment of temporary magnet systems in humans: 1) a magnet was affixed to the upper and lower eyelids, and 2) a magnet was affixed to the upper eyelid and another to eyeglasses. Parameters evaluated were eyelid positions and success of eyelid closure in healthy adult volunteers. Results: Magnetic force required to create the average eyelid opening force was calculated from the eyelid model to be equivalent to 4 magnets. The magnet system affixed to upper and lower eyelids resulted in complete eyelid closure in 5 of 5 normal controls, while the magnet system affixed to the upper eyelid and to spectacles resulted in complete eyelid closure in 10 of 13 normal controls. Conclusions: Magnetic systems for eyelid closure were designed that used either magnets affixed to both upper and lower eyelids or an upper eyelid magnetic component combined with a magnetic element in the lower rim of spectacles. Both were effective in eyelid closure in a model eye and normal controls. These systems may ultimately provide a simplified, safer, and less invasive method to treat paralytic lagophthalmos.

Original languageEnglish (US)
Pages (from-to)305-308
Number of pages4
JournalOphthalmic plastic and reconstructive surgery
Volume30
Issue number4
DOIs
Publication statusPublished - Jan 1 2014
Externally publishedYes

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ASJC Scopus subject areas

  • Surgery
  • Ophthalmology

Cite this

Barmettler, A., Nissanka, N., Rosenblatt, M. I., Rao, R., Lipson, D., & Lelli, G. J. (2014). Magnetic systems for tarsorrhaphy. Ophthalmic plastic and reconstructive surgery, 30(4), 305-308. https://doi.org/10.1097/IOP.0000000000000097