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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

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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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Open Angle Glaucoma: Treatment01:27

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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.
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Angle Closure Glaucoma: Treatment01:28

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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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Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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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,...
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Focusing of Light in the Eye01:16

Focusing of Light in the Eye

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
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Related Experiment Video

Updated: Mar 17, 2026

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
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Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation

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[Glaucoma-a common disease].

I Oberacher-Velten1, E Hoffmann2, H Helbig3

  • 1Klinik und Poliklinik für Augenheilkunde, Klinikum der Universität Regensburg, Franz-Josef-Strauß-Allee 11, 93053, Regensburg, Deutschland. isabel.oberacher@gmx.de.

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|July 23, 2016
PubMed
Summary
This summary is machine-generated.

Glaucoma is a leading cause of blindness globally. This review examines its epidemiology and significant impact on daily life, work, and overall quality of life for affected individuals.

Keywords:
BlindnessEmploymentEpidemiologyQuality of lifeScreening

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Area of Science:

  • Ophthalmology
  • Public Health

Background:

  • Glaucoma represents the second primary cause of irreversible blindness worldwide.
  • Understanding the disease's epidemiology is crucial for public health initiatives.

Purpose of the Study:

  • To provide a comprehensive review of glaucoma epidemiology.
  • To elucidate the profound consequences of glaucoma on patients' daily living, work capacity, and quality of life.

Main Methods:

  • Literature review of epidemiological studies on glaucoma.
  • Analysis of research on the functional and social impact of glaucoma.

Main Results:

  • Glaucoma affects millions globally, with prevalence varying by ethnicity and age.
  • Vision impairment from glaucoma significantly disrupts daily activities, reduces work productivity, and diminishes overall well-being.

Conclusions:

  • Effective glaucoma management strategies are essential to mitigate its public health burden.
  • Addressing the multifaceted consequences of glaucoma is critical for improving patient outcomes and quality of life.