'Dry eyes' refers literally to what it means - the eye area not having enough of hydration. Fraction of a second is enough for eyes to out there all about the things going around us and accordingly we take the action which moves our life. https://ifi.vnu.edu.vn/index.php?language=vi&nv=statistics&nvvithemever=t&nv_redirect=aHR0cHM6Ly9Xd3cuVGhlcmFsaWZlLmNvbS9hdXRvaW1tdW5lLWRyeS1leWUv