If there are stones in the lacrimal ducts, then there are blockages and blockages lead to diseases,
Lacrimal Duct Obstruction 200 460 600 2750 (st 1220 2756-9 3275 6495-4 7350 8336-9) Hz
and
Lacrimal Apparatus Diseases 120 550 850 5500 (st 2250 3569 7330 9250 1252-3 5278-1) Hz
Diseased, obstructed and swollen lacrimal glands will cause dry eyes and affect vision.
Good day.