Victims of volcanic eruptions have been advised to cope with ash by wearing goggles over their contact lenses.
The Guardian picked up an Associated Press report as preparations are made for a possible eruption from Mount Redoubt in Alaska.
Glass and rock can be contained in Alaskan volcano ash, which can be fired several miles into the air.
As well as goggles, people in the area are advised to stay inside and don masks.
Mount Redoubt is currently being watched by scientists in the Alaska Volcano Observatory (AVO).
Its previous eruptions took place in 1902, 1966 and 1989.
The 1989 eruption shot ash 45,000 feet high where it hit an aeroplane, which subsequently made a safe landing.
Mount Redoubt is 9,000 feet above the valleys that surround it.
The AVO says an eruption like the 1989 one is probable.
by Alexa Kaczka