Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Ocular Citrosis is a common infection of the eye generally resulting from periodic exposure to acidic substances, such as citrus fruit. It was first documented by Scottish physician Douglas Maclagan in 1860. Ocular Citrosis is most common among industrial workers who habitually experience alterations of pH in their work day. A test conducted in 1991 at the Sanford-Burnham Medical Research Institute demonstrated that ocular citrosis can be caused by the extended exposure of the eye to supposedly harmless acids, including citrus fruits. This discovery led to a brief public panic, which Alfred T. Murrough, head of the project, dismissed as "pure hypochondria:"