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Patterns of non-embolic transient monocular visual field loss
Axel Petzold1, Niaz Islam, G T Plant
1Moorfields Eye Hospital, London, EC1V 2PD, UK. a.petzold@vumc.nl
Journal of Neurology
|April 9, 2013
Summary
This study classifies non-embolic transient monocular visual field loss (neTMVL) into five types based on patient symptoms. Nifedipine treatment effectively reduced attack frequency in some patients, suggesting vasospasm as a potential cause.
Area of Science:
- Ophthalmology
- Neurology
- Clinical Medicine
Background:
- Non-embolic transient monocular visual field loss (neTMVL) requires systematic description.
- Understanding neTMVL semiology is crucial for diagnosis and management.
Purpose of the Study:
- To systematically describe the semiology of non-embolic transient monocular visual field loss (neTMVL).
- To classify neTMVL based on observed symptoms and patient history.
- To evaluate the treatment response to nifedipine in patients with neTMVL.
Main Methods:
- Retrospective case note analysis of 77 patients with neTMVL from Moorfields Eye Hospital (1995-2007).
- Analysis of variables including age, onset, duration, perception, associated symptoms, and treatment response.
- Classification of visual field loss patterns and symptom types.
Main Results:
- Identified 77 patients with neTMVL; mean age of onset was 37 years.
- Classified neTMVL into five reversible types: grey, white, black, phosphenes, and patchy.
- Nifedipine treatment reduced attack frequency in 13 patients with frequent attacks, suggesting vasospasm.
Conclusions:
- Established a classification system for five types of reversible neTMVL based on semiology.
- Nifedipine's efficacy in reducing attack frequency suggests a vasospastic component in some neTMVL cases.
- Further research into the pathophysiology and treatment of neTMVL is warranted.
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