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Related Concept Videos

Parkinson's Disease: Overview01:15

Parkinson's Disease: Overview

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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
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Parkinson's Disease: Treatment01:24

Parkinson's Disease: Treatment

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Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
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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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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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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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Prosopagnosia01:24

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Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
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Related Experiment Video

Updated: Jun 26, 2025

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

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[Visual impairment in Parkinson’s disease].

Solveig E J Dalbro1, Emilia Kerty1

  • 1Nevrologisk avdeling, Oslo universitetssykehus, Rikshospitalet, og, Universitetet i Oslo.

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|May 15, 2024
PubMed
Summary

Parkinson's disease often causes visual impairments, impacting daily life and motor skills. Identifying and addressing these vision issues can significantly improve patient quality of life.

Area of Science:

  • Neurology
  • Ophthalmology

Background:

  • Parkinson's disease (PD) is defined by motor symptoms like bradykinesia, rigidity, and tremor.
  • Non-motor symptoms, including visual impairment, are prevalent in PD patients.
  • Visual deficits in PD can exacerbate motor control issues and affect daily functioning.

Purpose of the Study:

  • To review common visual impairments associated with Parkinson's disease.
  • To highlight the impact of visual deficits on motor function and quality of life.
  • To provide guidance for managing and improving visual function in PD patients.

Main Methods:

  • Clinical review of existing literature on visual impairments in Parkinson's disease.
  • Analysis of reported visual symptoms such as blurred vision, photophobia, and reading difficulties.

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  • Discussion of the relationship between visual function and motor control in PD.

    • Main Results:

    • Common visual impairments include blurred vision, light sensitivity, reading difficulties, and eye fatigue.
    • Visual deficits significantly affect postural stability and movement initiation in PD patients.
    • Underdiagnosed visual issues in PD patients require timely identification and intervention.

    Conclusions:

    • Visual impairment is a frequent and impactful non-motor symptom of Parkinson's disease.
    • Addressing visual problems is crucial for enhancing motor function and overall quality of life in PD.
    • Early detection and management strategies for visual disturbances can improve patient outcomes.