In Vivo 3-Dimensional Strain Mapping Confirms Large Optic Nerve Head Deformations Following Horizontal Eye Movements
نویسندگان
چکیده
منابع مشابه
Finite Element Analysis Predicts Large Optic Nerve Head Strains During Horizontal Eye Movements.
PURPOSE We combined finite element (FE) analysis and dynamic magnetic resonance imaging (MRI) to estimate optic nerve head (ONH) strains during horizontal eye movements, and identified factors influencing such strains. We also compared ONH strains (prelamina, lamina cribrosa, and retrolamina strains) induced by eye movements to those induced by IOP. METHODS The ocular globes and orbits of a h...
متن کاملPredictions of Optic Nerve Traction Forces and Peripapillary Tissue Stresses Following Horizontal Eye Movements.
Purpose To use finite element (FE) analysis to predict the optic nerve sheath traction forces that act on the optic nerve head (ONH) following horizontal eye movements, and the resulting stress levels in the peripapillary connective tissues of the ONH (Bruch's membrane [BM] and sclera). Methods An FE model of a healthy eye was reconstructed in primary gaze position that included details from ...
متن کاملMapping in-vivo optic nerve head strains caused by intraocular and intracranial pressures.
Although it is well documented that abnormal levels of either intraocular (IOP) or intracranial pressure (ICP) can lead to potentially blinding conditions, such as glaucoma and papilledema, little is known about how the pressures actually affect the eye. Even less is known about potential interplay between their effects, namely how the level of one pressure might alter the effects of the other....
متن کاملOptic nerve head microvasculature of the rabbit eye.
Vascular luminal castings of rabbit eyes were microdissected and studied with scanning electron microscopy to elucidate the three-dimensional angioarchitecture of the optic nerve head. Using sequential microdissection, an incomplete arterial circle was identified as terminal branches of two to three short posterior ciliary arteries around the optic nerve head. Several recurrent branches from th...
متن کاملIn vivo optic nerve head biomechanics: performance testing of a three-dimensional tracking algorithm.
Measurement of optic nerve head (ONH) deformations could be useful in the clinical management of glaucoma. Here, we propose a novel three-dimensional tissue-tracking algorithm designed to be used in vivo. We carry out preliminary verification of the algorithm by testing its accuracy and its robustness. An algorithm based on digital volume correlation was developed to extract ONH tissue displace...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Investigative Opthalmology & Visual Science
سال: 2016
ISSN: 1552-5783
DOI: 10.1167/iovs.16-20560