Roots of the theory and practice of ocular pharmacology may be traced to the ancient Mesopotamian code of Hammurabi and then to several papyri reflecting the clinical interests of the Egyptians. The evolution of its art and science was irregularly paced until the nineteenth century when Kohler, in 1884, proved the anesthetic effect of cocaine on the cornea, and when Fraser, Laquer, Schmiedeberg, Meyer, and others studied the pharmacology of the autonomic nervous system by way of observations of the pupil. Advances in the past few decades have been nothing short of explosive. How can the...