Loose fit of the mask to the face can lead to eye diseases. The Russians were warned of possible vision problems due to improper wearing of the mask. If the face shield is not firmly attached to the face, adverse conditions may be created for the surface of the cornea and conjunctiva of the eye. “Scientists have found out: if you wear a mask for a long time, the air that a person exhales constantly circulates up and down. But if the mask is loose on the face, most of the air comes out from the top. Thus, its flow near the eyes increases - the tear film evaporates faster, "the chief physician of the city polyclinic 46 Denis Serov told the Moscow news agency about this. The doctor noted that due to insufficient moisture in the tear fluid, serious changes can occur, which often lead to loss of visual acuity and even injury to the cornea. Note that the majority of Russians support wearing masks in public places. And the Supreme Court of the Russian Federation allowed stores not to serve customers without masks. Read all the latest coronavirus news here. Photo: Depositphotos Let's be friends on social networks! Subscribe to us on Facebook, VKontakte and Odnoklassniki!