Why do Japanese and Chinese have narrow eyes?
To begin with, let’s clarify: the eyes of Japanese, Chinese, Koreans and other representatives of the Mongoloid race, in General, are the same shape as people of other nationalities and races.
The impression of “narrow-eyed” is created by a special fat “Mongolian fold” of the eyelid at the inner corner of the eye-epicanthus. In representatives of other races, epicanthus is very rare; in Mongoloids, it is present in almost all.
As for the nature of the “Mongolian fold”, there is no single version, some scientists believe that epicanthus is an additional remedy for frostbite in cold winter conditions.
We should not forget that “narrow-eyed” is a characteristic feature not only of the Chinese, Japanese and Thais living in the tropics, but also of the inhabitants of the Far North – Eskimos, Chukchis, Aleuts, Nenets and others.