黒こく内ない障しょう

also: くろそこひ

こ

く

な

い

しょ

う

Meanings

1

noun

black cataract; amaurosis

Medical term for a severe form of cataract or blindness where the pupil appears black. The reading こくないしょう is modern; くろそこひ is an older, now rare reading.

黒こく内ない障しょうは、瞳どう孔こうが黒くろく見みえる重じゅう度どの白はく

内ない

障しょう

を

指さ

す

こと

が

ある

。

Kokunaishō can refer to a severe cataract where the pupil appears black.

昔むかしの医い学がく書しょでは「くろそこひ」という読よみも見みられる。

In old medical texts, the reading 'kurosokohi' is also seen.

Kanji

黒black
内inside, within, between
障hinder, hurt, harm
底bottom, sole, depth
翳hold aloft

Related words

白はく内ない障しょう
白内障 is the common term for cataract (clouding of the lens), while 黒内障 specifically refers to a black cataract or amaurosis, a more severe or historical diagnosis.

Written forms

黒内障
- こくないしょう
  Standard medical kanji spelling for the reading こくないしょう.
- くろそこひ
黒底翳くろそこひ
Historical kanji spelling associated with the older reading くろそこひ; rarely used in modern texts.
くろそこひ
Kana spelling for the older reading くろそこひ, which is now largely replaced by こくないしょう.

Etymology

Derived from 黒 (black) + 内障 (internal eye disease). The term is a Sino-Japanese medical compound. The older reading くろそこひ combines the native reading くろ (black) with そこひ (an old term for eye disease).