在患有勒维体痴呆症的视觉功能障碍
Ryan A Devenyi1, Ali G Hamedani2,3,4
1Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Current neurology and neuroscience reports
|June 22, 2024
概括
视觉功能障碍在患有勒维体 (DLB) 痴呆症中很常见,影响知觉,物体识别和空间意识. 这些问题导致DLB患者的跌倒和驾驶障碍.
科学领域:
- 神经科学是一个神经科学.
- 眼科医生 眼科 眼科
- 老年病的医生 老年病的医生
背景情况:
- 勒维体痴呆症 (DLB) 是一种神经退行性疾病,其特征是认知能力下降,帕金森症和视觉幻觉.
- 视觉功能障碍是DLB的核心特征,影响视觉处理的各个方面.
- 了解这些缺陷对于诊断和管理至关重要.
研究的目的:
- 审查当前关于Lewy体痴呆症视觉功能障碍的文献.
- 探索这些视觉缺陷的潜在机制和临床影响.
- 突出最近在理解前性和明显的DLB视觉障碍方面的进展.
主要方法:
- 对DLB视觉功能障碍研究的文献综述.
- 对新的视觉缺陷和成像发现的最新研究分析.
- 综合关于临床相关性和结果的信息.
主要成果:
- 最近的研究发现了新的视觉功能障碍,如视觉纹理无知症和3D对象旋转困难.
- 面和面的低流与视觉结构受损相关.
- 视网膜成像显示出异常,例如在DLB.DLB中偏膜稀释.
- 患者在色彩感知,物体识别和空间意识方面表现出缺陷,这与视觉皮层功能障碍有关.
- 视觉功能障碍与视觉幻觉,驾驶障碍和跌倒有关.
结论:
- 视觉功能障碍是莱维体痴呆症的一个重要和多方面的方面.
- 这些缺陷具有深刻的临床影响,影响患者的安全和生活质量.
- 持续的研究,包括视网膜成像和前阶段的研究,对于改善DLB患者护理至关重要.
更多相关视频
12:23Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients
Published on: April 14, 2014
14.1K
07:12Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
Published on: April 11, 2025
322
相关概念视频
01:22Photoreceptors and Visual Pathways
6.0K
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,...
6.0K
01:30Dementia
110
Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual....
The progression of dementia is generally gradual....
110
01:24Prosopagnosia
155
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...
155
01:26Alzheimer's Disease: Overview
462
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
462
01:12Visual Agnosia
190
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...
190
01:25Glaucoma: Overview
541
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...
541