Visual field analysis in patients with Parkinson's disease
Ozlem Yenice1, Sumru Onal, Ipek Midi
1Department of Ophthalmology, Marmara University School of Medicine, 34660 Uskudar, Istanbul, Turkey.
Parkinsonism & Related Disorders
|September 25, 2007
Summary
Patients with Parkinson's disease (PD) exhibit significantly worse visual field indices compared to controls. This suggests a shared pathological process may underlie vision loss in both PD and glaucoma.
Area of Science:
- Ophthalmology
- Neurology
- Neuroscience
Background:
- Parkinson's disease (PD) is a neurodegenerative disorder.
- Visual field deficits are increasingly recognized in PD patients.
Purpose of the Study:
- To evaluate and quantify visual field changes in patients diagnosed with Parkinson's disease.
- To compare visual field indices between PD patients and a healthy control group.
Main Methods:
- Standard automated perimetry was performed on 14 patients with Parkinson's disease (PD) and a control cohort.
- Patients with a Unified Parkinson's Disease Rating Scale (UPDRS) score below 25 were included.
Main Results:
- Patients with PD demonstrated significantly worse visual field indices, including mean deviation, pattern standard deviation, and corrected pattern standard deviation, compared to controls.
- Six patients with PD exhibited bilateral glaucoma-like visual field defects.
Conclusions:
- Worse visual field indices in Parkinson's disease suggest a potential common etiological factor with glaucoma.
- This finding points towards shared mechanisms in the pathogenesis of nerve fiber layer damage in both conditions.
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