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Related Concept Videos

Muscles of the Eye01:20

Muscles of the Eye

The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
Microbiome of the Eye01:22

Microbiome of the Eye

The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...

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Related Experiment Video

Updated: Jun 7, 2026

Robotic Enucleation of Esophageal Leiomyoma
04:19

Robotic Enucleation of Esophageal Leiomyoma

Published on: February 20, 2026

Primary eyelid leiomyoma.

Jennifer I Hui1, Nancy M Buchser, Sander R Dubovy

  • 1Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida 33139, USA. jhui@med.miami.edu

Ophthalmic Plastic and Reconstructive Surgery
|October 23, 2010
PubMed
Summary
This summary is machine-generated.

A rare eyelid tumor, leiomyoma, was diagnosed in a child after initial misdiagnosis as chalazion. This case highlights the importance of thorough histopathologic examination for accurate diagnosis of eyelid lesions.

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Published on: August 9, 2024

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Last Updated: Jun 7, 2026

Robotic Enucleation of Esophageal Leiomyoma
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Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
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Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Published on: August 9, 2024

Area of Science:

  • Ophthalmology
  • Dermatopathology
  • Oncology

Background:

  • Eyelid tumors can present with varied clinical features, sometimes mimicking benign conditions.
  • Accurate histopathologic diagnosis is crucial for appropriate management of eyelid lesions.

Observation:

  • A 10-year-old male presented with a recurrent, painful nodule on the lower eyelid margin, accompanied by madarosis.
  • Initial diagnosis at an outside institution was chalazion.

Findings:

  • Re-excision and subsequent histopathologic examination with immunohistochemistry confirmed the nodule as a primary eyelid leiomyoma.
  • This represents the first documented case of a primary leiomyoma originating in the eyelid.

Implications:

  • This case expands the differential diagnosis for eyelid nodules, particularly in pediatric patients.
  • It underscores the necessity of considering rare neoplastic entities even when clinical presentation suggests a more common condition.