This course will discuss the importance of corneoscleral topography/profilometry and the factors that measuring the scleral plays on the success of fitting a scleral lens. We will discuss how to identify problems caused by irregularities on the scleral and how to modify the scleral landing zone to improve the outcomes of their scleral lens fittings to give patients better vision, better comfort and help with the overall success of the scleral lens fitting process.