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Related Concept Videos

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Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
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Optical Coherence Tomography: Imaging Mouse Retinal Ganglion Cells In Vivo
08:17

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Published on: September 22, 2017

Nonglaucomatous optic atrophy.

Karl Golnik1

  • 1Department of Ophthalmology, University of Cincinnati, Cincinnati, OH, USA. kgolnik@fuse.net

Neurologic Clinics
|July 20, 2010
PubMed
Summary
This summary is machine-generated.

Optic atrophy is a pale optic disc sign, not a diagnosis, indicating potential vision loss. Further evaluation, including MRI, is crucial for unexplained cases to identify underlying causes.

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Area of Science:

  • Ophthalmology
  • Neurology

Background:

  • Optic atrophy is a clinical sign characterized by a paler-than-normal optic disc.
  • It is not a diagnosis but an indicator of optic nerve damage.

Observation:

  • Visual loss, including decreased acuity, impaired color vision, and reduced peripheral vision, must accompany optic atrophy.
  • While often diffuse, specific historical and examination findings can help differentiate its diverse etiologies.

Findings:

  • Optic atrophy signifies damage to the optic nerve, leading to irreversible vision impairment.
  • The appearance of the optic disc provides clues to the underlying cause.

Implications:

  • Patients presenting with unexplained optic atrophy require prompt and thorough investigation.
  • Magnetic resonance imaging (MRI) is recommended for evaluating unexplained optic atrophy to identify potential neurological causes.