Figure 1.
Clinical timeline: a 40-year-old male with keratoconus reporting smearing, shadowing and halos and glare at night despite having 20/20 vision in both eyes. Wavefront error was measured and wavefront-guided scleral lenses were fit, which reduced residual higher order aberrations, smearing and shadowing to a level that met his visual goals. OD = right eye; OS = left eye; OU = both eyes; VA = visual acuity; HORMS = higher-order root mean square; WFE = wavefront error; COAS = Complete Ophthalmic Analysis System.