轻度听力损失 - 轻度听力损失的人难以跟上对话,特别是在嘈杂的环境中。轻度听力损失的人听到的耳朵听起来最安静,声音在25到40 dB HL之间。
中度听力损失 - 中度听力损失的人在不使用助听器时难以跟上对话。平均而言,听力损失适中且耳朵较好的人听到的最安静的声音在40到70 dB HL之间。
严重听力损失 - 严重听力损失的人依赖强大的助听器。然而,即使他们使用助听器,他们也经常依赖唇读。听力损失严重且听力较好的人听到的最安静的声音在70到95 dB HL之间。
严重的听力损失 - 听力严重的人非常难听,他们主要依靠唇读和手语。听力损失严重且听力较好的人听到的最安静的声音是95 dB HL或更高。
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