We use evidence-based approaches to study and improve surgery for our patients. Once surgeons and scientists have a molecular target in their sights, numerous molecular drugs are available to them. These may involve enzymes, genes, antibodies, or chemicals. Eye surgeons can precisely and safely deliver any of these molecules near specific cells in the eye, avoiding the toxicity and issues associated with drugs taken by mouth or injected into the blood stream. Once delivered, patients can be observed noninvasively in the clinic using ultra-high-resolution cameras.