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Related Concept Videos

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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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...
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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...
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Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

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Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
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Published on: February 11, 2014

Visual impairment in older people.

Sue Watkinson1

  • 1Faculty of Health and Human Sciences, Thames Valley University.

Nursing Older People
|October 15, 2009
PubMed
Summary

This article outlines the crucial role nurses play in managing vision impairment in older adults. It focuses on care strategies for cataract, age-related macular degeneration, and glaucoma.

Area of Science:

  • Gerontology
  • Ophthalmology
  • Nursing Care

Background:

  • Older adults are disproportionately affected by visual impairment.
  • Cataract, age-related macular degeneration (AMD), and chronic open-angle glaucoma are leading causes of vision loss in this population.
  • Effective nursing interventions are vital for managing these conditions and supporting patients.

Purpose of the Study:

  • To provide a comprehensive overview of the nurse's role in caring for older individuals with specific ocular conditions.
  • To highlight key nursing responsibilities in managing cataract, AMD, and glaucoma.
  • To emphasize the importance of nursing in mitigating the impact of visual impairment on the elderly.

Main Methods:

  • Literature review and synthesis of current nursing practices.

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  • Analysis of evidence-based guidelines for ocular condition management in older adults.
  • Discussion of interdisciplinary collaboration in geriatric eye care.
  • Main Results:

    • Nurses are central to patient assessment, education, and support for individuals with cataract, AMD, and glaucoma.
    • Early detection and timely intervention are critical nursing functions.
    • Ongoing monitoring and management of treatment plans are essential nursing roles.

    Conclusions:

    • Nurses are integral to optimizing care for older adults with visual impairment due to cataract, AMD, and glaucoma.
    • Enhanced nursing knowledge and skills in ophthalmology improve patient outcomes.
    • A proactive nursing approach can significantly enhance the quality of life for elderly patients with vision loss.