The earthenware eye bath with blue transfer decoration (left) is English. The blue glas eye bath (second left) is European and dates from between 1851 and 1920. The porcelain eye bath with gold and pink decoration (second right) posibly dates from the 18th century. The Portia brand plastic eye bath (right) dates from between 1901 and 1970.
© Science Museum / Science & Society Picture Library