續一切經音義 3.38

3.38

瞖瞙（上於計反目病也下音莫字統云目不明也二字皆從目殹莫聲也經作膜謂皮內肉外也）。

Cataracts and films (瞖瞙: the first character has the fanqie 於計 [yu + ji / yì]. An eye disease. The second character is pronounced 莫 [mò]. The Zhitong says: "Dimness of vision." Both characters are formed with the radical 目 [eye], with 殹 and 莫 as their phonetic components. In scripture texts it is written as 膜, meaning inside the skin and outside the flesh.)