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He is the author of 5 books, entitled Optics for Ophthalmologists: A Board-Review Manual, Neuroprotection: Implication for Eye Disease, New Methods of Sensory Visual Testing, Ophthalmology, and Atlas of Leber’s Hereditary Optic Neuropathy. [4] Sadun is a Gold Fellow of the Association for Research in Vision and Ophthalmology (ARVO).
Non-arteritic anterior ischemic optic neuropathy, or NAION, is a condition that affects the optic nerve, a bundle of fibers that connects to the back of the eye and carries signals to the brain so ...
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In 2023, Huberman's lab, with David Spiegel, published a research paper on stress mitigation and carried out research on cortisol. [ 7 ] [ 10 ] The lab also released a study on the regeneration of the visual system, contributing to the understanding of stress management techniques and the potential for visual system recovery.
The optic nerve can be damaged when exposed to direct or indirect injury. Direct optic nerve injuries are caused by trauma to the head or orbit that crosses normal tissue planes and disrupts the anatomy and function of the optic nerve; e.g., a bullet or forceps that physically injures the optic nerve.
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A visual field test can differentiate between whether the reduced visual acuity is centered on the optic nerve or the fundus. Once a neurological problem has, therefore, been ruled out, the disorder's reduced visual acuity without visible fundus abnormalities may be misdiagnosed as optic neuritis, dominant optic atrophy, amblyopia, or ...
The exact mechanism of optic nerve ischemia in these cases remains unclear, but contributing factors may include hypotension, anemia, hypoxia, and changes in the autoregulation of optic nerve arterial blood flow. The incidence of ischemic optic neuropathy leading to vision loss following general surgeries ranges between 0.1% and 0.002%.