…Early cataracts are also called primary cataracts, and vision is only slightly affected, but as the opacity progresses, it changes from immature to mature cataracts, causing vision problems. Severely opaque cataracts are called hypermature cataracts. It is not yet clear why opacification occurs, but possible causes include nuclear sclerosis due to dehydration, a decrease in soluble protein in the lens, and an increase in insoluble protein. … *Some of the terminology that refers to "hypermature cataract" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…初期のものは初発白内障ともいわれ,視力が侵されることは軽微であるが,混濁が徐々に進行するにしたがって,未熟白内障から成熟白内障へと変化し,視力障害が生ずる。高度に混濁したものを過熟白内障という。なぜ混濁が生ずるのかまだ明らかにされてはいないが,脱水による核質硬化,水晶体タンパク質のうち,可溶性タンパク質の減少,不溶性タンパク質の増加などがその原因として考えられている。… ※「過熟白内障」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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