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Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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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Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
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A pigmented optic disc.

Elaine Thung1, Rod Foroozan

  • 1Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA.

Journal of Neuro-Ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society
|March 4, 2011
PubMed
Summary
This summary is machine-generated.

An uncommon finding of an entirely pigmented optic disc was observed in a 48-year-old woman. This case report discusses potential explanations for this rare physiologic variant.

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Area of Science:

  • Ophthalmology
  • Optic Nerve Health
  • Ophthalmic Imaging

Background:

  • Optic disc pigmentation is a rare clinical finding.
  • Understanding optic disc variations is crucial for accurate ophthalmic diagnosis.
  • Physiologic variants can mimic pathological conditions.

Observation:

  • A case study of a 48-year-old white woman presenting with an entirely pigmented optic disc.
  • The optic disc pigmentation was noted in an otherwise healthy eye.
  • Detailed ophthalmic examination confirmed the absence of other ocular abnormalities.

Findings:

  • The primary finding is the presence of a completely pigmented optic disc.
  • This represents an unusual presentation of optic disc morphology.
  • Differential diagnoses for pigmented optic discs are considered.

Implications:

  • This case highlights the importance of recognizing benign physiologic variants.
  • Accurate identification of optic disc pigmentation can prevent misdiagnosis of optic nerve diseases.
  • Further research into the prevalence and etiology of optic disc pigmentation is warranted.