This award-winning picture shows a 66-year old man with inferior conjunctival scarring in his left eye photographed using fluorescein dye.
This picture was a bronze award winner in the 2009 Institute of Medical Illustrators awards and was taken by Katherine Grice at Bradford Teaching Hospitals NHS Foundation Trust.
This is the seventh in our series of clinical pictures which will be published every week. Check back here to see future pictures.
Credit: Katherine Grice, Bradford Teaching Hospitals NHS Foundation Trust