translation.en: But, every so often, we come across children who show some residual vision, and that is a very good sign that the condition might actually be treatable.
translation.zh: 尽管情况如此糟糕，我们还是会遇到 有些孩子留有少许视力 这是非常好的迹象 说明这种病例有治疗的希望