Vivorot sleznoy tochki, ko’z yosh nuqtasining ag’darilishi nima degani

Vivorot sleznoy tochki, ko’z yosh nuqtasining ag’darilishi nima degani – ko’z yoshi oqib o’tadigan kanalchalar teshigining o’z joyidan pastroqqa-pastki qovoq tomonga siljishi.