Optic Nerve Sheath as a Novel Mechanical Load on the Globe in Ocular Duction

• Published in: Investigative ophthalmology & visual science Vol. 57; no. 4; pp. 1826 - 1838
• Main Author: Demer, Joseph L.
• Format: Journal Article
• Language: English
• Published: United States The Association for Research in Vision and Ophthalmology 01.04.2016
• Subjects: Adult; Esotropia - pathology; Eye Movements, Strabismus, Amblyopia and Neuro-Ophthalmology; Female; Humans; Magnetic Resonance Imaging - methods; Male; Oculomotor Muscles - pathology; Optic Nerve - pathology; Stress, Mechanical
• ISSN: 1552-5783; 0146-0404; 1552-5783
• DOI: 10.1167/iovs.15-18718

The optic nerve (ON) sheath's role in limiting duction has been previously unappreciated. This study employed magnetic resonance imaging (MRI) to demonstrate this constraint on adduction. High-resolution, surface coil axial MRI was obtained in 11 normal adults, 14 subjects with esotropia (ET) h...