Fitting a semi-scleral contact lens (RoseK2XL, 14.5mm) on a keratoconic eye of 3.80mm radius of curvature, probably one of the steepest (but still healthy) corneas ever been encountered ! The 67-year-old patient had been wearing a 25-mm PMMA scleral (haptic) lens for more than 4 decades, but after all these years of wearing such a lens he has been experiencing extensive lens "deposits", limiting wearing time to 3-4 hours per day and decreasing acuity due to veiling glare and blur. His decimal VA in this eye is now 0.8 !