‘Standard face masks, which have become widespread as countries try to stop the spread of coronavirus, muffle words and obscure the mouth... Main dans la Main (Hand in Hand), an association which supports deaf and hearing impaired people in Chevrières, northern France, is among the organisations around the world that have created a mask with a transparent window... But one setting where homemade masks are not suitable - but where both PPE and communication are vital - is in hospitals. There is just one company in the US that has secured Food and Drug Administration (FDA) approval to make clear masks for clinical use.’
Read here (BBC, May 26, 2020)
