人类各种遗传性疾病不下3000余种.眼科遗传病至少有250种左右。但表现孟德尔式单基因遗传的眼病为数并不多。某些单基因遗传眼病已被确定为是显性的或是隐性的;是常染色体遗传或是性染色体遗传。但也确有一些遗传性眼病的遗传规律尚不明确.各种报道大相经庭。先天性白内障便是一例.该病是眼科常见疾病,早在四十年代就有人分析了该病的遗传谱系。证据表明它是以简单的常染色体显性形式传递的.以后有更多的 No less than 3000 kinds of genetic diseases of human beings, at least 250 kinds of ophthalmic genetic diseases. However, there are not many eye diseases that manifest Mendelian single-gene inheritance. Certain monogenic genetic eye diseases have been identified as dominant or recessive; autosomal or sex chromosome inheritance. But it is true that some of the genetic laws of hereditary eye diseases are not clear. One example is congenital cataract, a common ophthalmological disease that was first analyzed in the forties. Evidence suggests that it is transmitted as a simple, autosomal dominant form, and more later