Sudden visual loss的用法和樣例：
例句
- A link has been found between eating too much red meat and vision loss.
有研究發現吃紅肉太多與視力喪失之間是有聯繫的。 - Ophthalmic artery occlusion usually causes severe permanent visual loss, and conservative treatments generally have poor prognoses in most cases.
摘要眼動脈塞往往引起嚴重的視力喪失，而以保守療法治療往往愈后不佳。
