3. As recently this problem attacked me,as blockage a tear canal of right eye ,thus after right away a bag under eye displayed , and to the morning my cheek is edema,

as am not had injures, nothing hurt, sicked,and which cure for me is good? 

A lacrimal way or nasolacrimal canal is duct,connecting vision organs with a nose passage.As tears here removing in nose cavity,but sometimes tear outflow by a natural way is hardening.

But a nasolacrimal canal is not blockading,as for this are predisposition factors having as inborn obstruction, deviations from a norm in eyelids development , scull, face, infections for eyeball, mechanical injures, tumours for sinuses ,systemic diseases, pathologies for connective tissue,gastrointestine diseases, diabetes,after a long time drops using for eyes. As workers in dust factories,and reader for, as not think about a reason, just faster visit a doctor ophthalmologist ,that to put a true reason for disease. And self cure is not possible,and drops for changing a tear are not helping and risks for allergy and inflammation displaying.