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Related Concept Videos

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...
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...
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...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...

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Related Experiment Video

Updated: May 23, 2026

Characterizing the Relationship Between Eye Movement Parameters and Cognitive Functions in Non-demented Parkinson's Disease Patients with Eye Tracking
07:26

Characterizing the Relationship Between Eye Movement Parameters and Cognitive Functions in Non-demented Parkinson's Disease Patients with Eye Tracking

Published on: September 26, 2019

Gender differences in benign essential blepharospasm.

Michael S Lee1, Matthew Johnson, Andrew R Harrison

  • 1Department of Ophthalmology, University of Minnesota Medical School, Minneapolis, Minnesota 55455, USA.

Ophthalmic Plastic and Reconstructive Surgery
|March 31, 2012
PubMed
Summary
This summary is machine-generated.

Benign essential blepharospasm (BEB) affects women more severely, with greater symptom frequency and severity. However, treatment intervals and daily impact show no significant sex-based differences in BEB patients.

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Last Updated: May 23, 2026

Characterizing the Relationship Between Eye Movement Parameters and Cognitive Functions in Non-demented Parkinson's Disease Patients with Eye Tracking
07:26

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In Vitro Method to Study Sex-Based Differences in Conjunctival Goblet Cells
06:28

In Vitro Method to Study Sex-Based Differences in Conjunctival Goblet Cells

Published on: July 28, 2023

Area of Science:

  • Ophthalmology
  • Neurology

Background:

  • Benign essential blepharospasm (BEB) is a neurological movement disorder.
  • Understanding sex-based differences in BEB can refine treatment strategies.

Purpose of the Study:

  • To investigate potential differences in disease characteristics between male and female patients diagnosed with benign essential blepharospasm (BEB).

Main Methods:

  • Retrospective chart review of 32 male and 61 female BEB patients to compare botulinum toxin A treatment intervals.
  • Prospective comparison of BEB-related questionnaire results between 36 female and 15 male patients.

Main Results:

  • No significant difference was found in the mean interval between botulinum toxin A treatments for men (16.69 weeks) and women (17.31 weeks).
  • Women reported significantly higher symptom severity and frequency compared to men (p = 0.008).
  • Disease-related handicap in daily activities was similar between sexes.

Conclusions:

  • While women with BEB experience more severe and frequent symptoms, overall disease characteristics and treatment response do not significantly differ between sexes.
  • Further research may explore the reasons behind the higher symptom burden in female BEB patients.