Normally,this fluid has only one purpose.This is to irrigate the cornea of the eye and so to prevent it from drying out.But suppose some irritating substance reaches the eye? The eye automatically blinks.Tears come out to wash the eye and protect it
Normally,this fluid has only one purpose.This is to irrigate the cornea of the eye and so to prevent it from drying out.But suppose some irritating substance reaches the eye? The eye automatically blinks.Tears come out to wash the eye and protect it