The opening of the eyes The eyes in the head of Atika Kadisha, Arich Anpin – both eyes are considered as one. They are always watchful, never asleep, as written, “Behold, he who keeps Israel shall neither slumber nor sleep” (Tehillim 121:4), that is, holy Israel, which is Zeir Anpin. It therefore has neither eyebrows nor eyelids over the eyes.
That brain, that is, concealed Chochmah of Arich Anpin, is engraved at a time of immaturity, and shines during maturity with the three white hues of the eye (as said in the Greater Gathering of Naso, section 42; study there). They are the three types of Chesed in their three columns. With one type of white, they wash the eyes of Zeir Anpin, as written, “washed with milk” (Shir Hashirim 5:12), which is Chesed that is called milk, the first white of the three types of white in the eyes of Arich Anpin, that is, their right column. The other types of white wash and shine with the other luminaries, that is, the other levels.