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Related Concept Videos

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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...
Glaucoma: Overview01:25

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...
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...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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...
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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Related Experiment Video

Updated: Jun 16, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
06:15

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

Published on: August 9, 2024

[Conjunctival tumours in elderly patients].

F Tost1, M Evert

  • 1Augenklinik am Universitätsklinikum, Ernst-Moritz-Arndt-Universität, Greifswald. tost@uni-greifswald.de

Klinische Monatsblatter Fur Augenheilkunde
|January 22, 2010
PubMed
Summary

Conjunctival aging, similar to skin aging, increases risks of eye tumors in older adults. Therapeutic strategies must consider geriatric factors for effective treatment.

Area of Science:

  • Ophthalmology
  • Gerontology
  • Dermatology

Context:

  • The conjunctiva, a mucous membrane, acts as a protective ocular barrier, analogous to skin.
  • Conjunctival aging shares similarities with skin aging, influenced by biological, genetic, and environmental factors, including light exposure.

Purpose:

  • To explore the relationship between conjunctival aging and increased tumor incidence in elderly patients.
  • To highlight the importance of age-specific considerations in diagnosing and managing conjunctival tumors in geriatrics.

Summary:

  • Aging conjunctiva exhibits dysregulated homeostasis and reduced protective function, contributing to higher rates of tumors and malignant transformations in the elderly.
  • Tumor manifestation in older patients necessitates age-adjusted differential diagnosis and treatment strategies, encompassing surgical, cryo-, chemo-, or radiotherapy.

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A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva
07:35

A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva

Published on: July 5, 2017

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Last Updated: Jun 16, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
06:15

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

Published on: August 9, 2024

A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva
07:35

A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva

Published on: July 5, 2017

  • Geriatric aspects such as tissue fragility, impaired wound healing, multimorbidity, and decreased adherence are critical in planning conjunctival tumor management.
  • Impact:

    • This research underscores the need for age-tailored approaches in ophthalmology, particularly for managing age-related ocular surface diseases and malignancies.
    • Understanding conjunctival aging mechanisms can inform preventative strategies and optimize therapeutic outcomes for elderly patients with ocular tumors.