This document discusses when to refer patients to a focus eye centre (FEC) after refractive eye surgery. It provides guidelines on referring patients for post-operative findings like diffuse lamellar keratitis, interface debris, or edge defects. It also discusses parameters for referring patients for enhancement procedures if their vision is more than 1 diopter from the target or if visual acuity is worse than 20/40. The document includes several case studies asking whether patients should be referred or not based on their history and exam findings. It provides recommendations to refer patients with cataracts, posterior capsule opacification, or who are unable to adapt to monovision.