Safety & Effectiveness of the PXL-Platinum 330 System for CXL Using Riboflavin Solution

Inclusion Criteria: * 8 years of age or older * Signed written informed consent * Willingness and ability to comply with schedule for follow-up visits * Contact Lens Wearers Only: * Removal of contact lenses (if applicable) for the required period of time prior to the screening refraction: Soft, discontinue 3 days; Soft Extended Wear, discontinue 3 days; Soft Toric, discontinue 3 days; Rigid gas permeable, discontinue 2 Weeks (subjects who cannot function without wearing their contact lenses, may forgo discontinuation of contact lenses) And one or more of the following: * Presence of central or inferior steepening. * Axial topography consistent with keratoconus, post-surgical ectasia, or pellucid marginal degeneration * Presence of one or more findings associated with keratoconus or pellucid marginal degeneration, such as: Fleischer ring, Vogt's striae, Decentered corneal apex, Munson's sign, Rizzutti's sign, Apical Corneal scarring consistent with Bowman's breaks, Scissoring of the retinoscopic reflex, Crab-claw appearance on topography * Steepest keratometry (Kmax) value ≥ 47.20 D * I-S keratometry difference \> 1.5 D on the Pentacam/Orbscan map or topography map * Posterior corneal elevation \>16 microns * Thinnest corneal point \>300 microns Exclusion Criteria: * Eyes classified as either normal or atypical normal on the severity grading scheme. * Corneal thickness \< 300 microns measured by ultrasonic pachymetry or pentacam. * Previous ocular condition (other than r…