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Visual field characteristics in normal-tension glaucoma patients with autonomic dysfunction and abnormal peripheral
Hae-Young Lopilly Park1, Kyoung-In Jung, Kyung-Sun Na
1Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
American Journal of Ophthalmology
|June 19, 2012
Summary
Normal-tension glaucoma patients with autonomic dysfunction or poor peripheral circulation often show central visual field defects. Vascular health is crucial for understanding glaucoma progression, especially in central vision loss.
Area of Science:
- Ophthalmology
- Cardiology
- Neurology
Background:
- Normal-tension glaucoma (NTG) is a progressive optic neuropathy.
- Autonomic dysfunction and peripheral microcirculation abnormalities are implicated in various vascular conditions.
- Understanding the link between vascular health and visual field defects in NTG is crucial for patient management.
Purpose of the Study:
- To investigate the visual field (VF) characteristics in normal-tension glaucoma (NTG) patients.
- To correlate VF defects with autonomic dysfunction (assessed by heart rate variability - HRV) and abnormal peripheral microcirculation (assessed by nailfold capillaroscopy).
Main Methods:
- A prospective observational study included 60 NTG patients.
- Patients underwent ophthalmic examination, HRV assessment, and nailfold capillaroscopy.
- Visual field defects were analyzed based on location (central vs. peripheral) and severity, categorized by HRV and capillaroscopy findings.
Main Results:
- More frequent and deeper superior central visual field defects were observed in NTG patients with low HRV or abnormal capillaroscopy.
- Pattern standard deviation was significantly higher in eyes with central defects compared to peripheral defects within these groups.
- HRV assessment and capillaroscopy findings were significantly related to the location of visual field defects.
Conclusions:
- Low heart rate variability and abnormal nailfold capillaroscopy in NTG patients are associated with central visual field defects.
- Vascular risk factors should be considered in the management of NTG patients presenting with central visual field defects.
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