Putting the drops in the opsin

My latest podcast for the Royal Society of Chemistry takes a trip into your eyes and the remarkable compounds - opsins - that give you the ability to see.

Probably the best known of the opsins is rhodopsin. The 'rhod' part of the name, spelled R-H-O-D, comes from a Latin root meaning 'rosy', reflecting rhodopsin's purplish-red coloration - it is sometimes called 'visual purple.' However the name is doubly apt, because rhodopsin is found in a particular type of cell in animal retinas - the rod. But there's plenty more to find out, so hurry along to the RSC compounds site - or if you've five minutes to spare now, click to to have a listen to my podcast on opsins.