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Oculo-visual abnormalities in Parkinson's disease: Possible value as biomarkers
Li Guo1, Eduardo M Normando1,2,3, Parth Arvind Shah1
1Glaucoma and Retinal Degenerative Disease Research Group, Institute of Ophthalmology, University College London, London, UK.
Summary
Ocular changes in Parkinson's disease (PD) offer a potential noninvasive diagnostic window. Research highlights eye abnormalities as promising biomarkers for early PD detection and monitoring disease progression.
Area of Science:
- Neuroscience
- Ophthalmology
- Neurology
Background:
- Parkinson's disease (PD) is a prevalent neurodegenerative disorder and a leading cause of dementia.
- Increasing global aging populations correlate with a rise in PD prevalence.
- Current diagnostic methods for PD face challenges in early and accurate detection due to a lack of noninvasive, cost-effective tests.
Purpose of the Study:
- To review recent advancements in understanding ocular changes associated with Parkinson's disease.
- To explore the potential of these ocular changes as biomarkers for early diagnosis.
- To evaluate the utility of ocular biomarkers in tracking PD progression and assessing new therapies.
Main Methods:
- Review of current literature on ocular manifestations in Parkinson's disease.
- Analysis of pathological links between cerebral and retinal neurodegeneration in PD.
- Examination of α-synuclein deposition and dopamine deficiency in the retina.
Main Results:
- Ocular changes, including visual dysfunction and retinal abnormalities, are observed in PD patients.
- These ocular pathologies mirror brain pathology, involving α-synuclein and dopamine.
- The eye serves as a potential noninvasive window to visualize brain disease processes.
Conclusions:
- Ocular biomarkers show promise for aiding in the early diagnosis of Parkinson's disease.
- Eye-based markers can potentially be used to monitor disease progression.
- Ocular findings may assist in evaluating the efficacy of novel therapeutic strategies for PD.