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Cerebral aneurysms causing visual symptoms: their features and surgical outcome
1Department of Neurological Surgery, Okayama University Medical School, Japan. idate333@med.okayama-u.ac.jp
Clinical Neurology and Neurosurgery
|January 8, 1999
Summary
Large cerebral aneurysms can cause rare visual symptoms before rupture. Prompt surgical treatment within 3 months improves visual outcomes, especially for internal carotid aneurysms.
Area of Science:
- Neurosurgery
- Vascular Neurology
- Ophthalmology
Background:
- Cerebral aneurysms rarely present with visual symptoms prior to rupture.
- Visually symptomatic aneurysms are typically large or giant in size.
Purpose of the Study:
- To analyze the clinical features and surgical outcomes of cerebral aneurysms causing visual dysfunction.
- To identify factors influencing visual recovery after treatment.
Main Methods:
- Retrospective analysis of 17 cases with visually symptomatic cerebral aneurysms.
- Evaluation of aneurysm location, size, symptom onset to treatment interval, and pre/post-operative visual function.
- Surgical methods included carotid ligation, bypass, and direct clipping.
Main Results:
- Internal carotid (IC)-cavernous and IC-ophthalmic aneurysms were most common locations for visual symptoms.
- All symptomatic cases involved large (15-24 mm) or giant (> 25 mm) aneurysms, mostly unruptured.
- Surgical intervention within 3 months of symptom onset correlated with improved visual function.
Conclusions:
- Cerebral aneurysms causing visual symptoms are often large/giant and unruptured.
- Expeditious surgical treatment is crucial for visual recovery.
- Timely intervention maximizes the chances of reversing visual dysfunction before it becomes permanent.