The word "photosensitive" means being sensitive to light, where certain substances or living things react or change when exposed to light. Full definition
The slightly concave photograms shown at 36 Orchard Street refer to Marey's diagrams, which record human steps with the use of photosensitive paper. (galleriesnow.net)
Exhibited as silver gelatin prints, Saunders» enigmatic works on paper are created by projecting light through a drawing or painting to expose a sheet of photosensitive paper. (tate.org.uk)
Early eyes might have been nothing more than a patch of photosensitive cells that could tell an animal if it was in light or shadow. (discovermagazine.com)