Sudden acquired retinal degeneration (SARD) is a disease in dogs causing sudden blindness.
急性获得性视网膜变性(SARD)
一种急性导致犬只失明
疾病。
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Suppose he should become blind, or, at all events, never recover sufficient strength of sight to engage in an occupation which would be congenial to her feelings, and conduce to her removal from this lonely dwelling among the hills?
假如他真
就此
,或者说,他
视力永远恢复不到能够去做合她心意
工作,无法让她从这山中荒凉
住所搬出去,那可该怎么办呢?
People with the disease usually start losing their sight before they are 18.This often progresses to total blindness. The gene that causes the disease could suddenly appear when a child is born with a copy of the gene from both parents.
患有这种疾病
患者通常会在18岁前丧
视力,通常会逐渐完

。当孩子遗传了来自父母双方
这种致病基因时,这种基因可能会突然显现。