• Decision Tree: When PRK and When LASIK Description: Marguerite McDonald, MD, provides an introduction on how to select when to use PRK or LASIK. She explains the differences between each procedure and various factors that should be taken into consideration while making this decision. Information about what type of patient is best suited for each procedure is also provided. Presented at AAO 2016 symposium, “Introduction to Corneal and Lens-Based Refractive Surgery for Residents,” co-sponsored by ISRS. Subspecialty: Refractive Management / Intervention Level: Beginner Uploaded By: ISRS Multimedia Library