英语语法分析

Two of them suffered from retinitis pigmentosa, while the third had a similar disease.

其中的两个患有视网膜炎色斑疾病，第三个患有类似的疾病。

About 100, 000 have retinitis pigmentosa, a progressive, genetic disorder that usually manifests in childhood.

而约有10万人患有视网膜色素变性疾病，它是一种进行性的遗传疾病，通常在儿童时期发病。

Retinitis pigmentosa is a disease that causes progressive loss of vision, as the photoreceptor cells degenerate, and eventually die.

视网膜炎色斑是一种可以引起视力丧失的疾病，也就是图像受体细胞退化，最终丧失功能。