The Royal National Institute for the Blind (RNIB) said clinics cannot cope with the rise in underlying causes of sight loss, like diabetes and obesity.
An ageing population and more treatment options have led to a surge in demand, it added.
A novel autonomous sub has acquired the first detailed, high-resolution 3D maps of Antarctic sea ice.
The researchers involved in the project tell the journal Nature Geoscience that the thickness of the pack ice was greater than they had anticipated.
When British explorers first surveyed the glacier in 1794, its nose extended to the northern edge of Heather Island, near the mouth of Columbia Bay. The glacier held that position until 1980, when it began a rapid retreat.
Explore Geography was founded and is maintained by Helen Muskett a humanities (geography specialist) teacher at Treviglas Community College. Any views expressed are her own and not those of the college. The website is intended as a resource for her students to support their classroom work and revision schedule. Anyone is welcome to use it for teaching or learning, no commercial use please.