• Topo-guided PTK and PRK severe scarring Description: This description of Placido-disc topography Scheimpflug tomography, anterior segment OCT and clinical images of excimer laser intervention in severely-scarred cornea from powder explosion that improved the patient’s visual function from significant irregular astigmatism and visual debilitation (20/60) to within a few weeks of fully functional 20/20 uncorrected Vision acuity Subspecialty: Refractive Management / Intervention Level: Intermediate Uploaded By: A. Kanellopoulos