title: [Comment on: "The reproducibility of a new power mapping instrument based on the phase shifting schlieren method for the measurement of spherical and toric contact lenses"].
authors.forename: Richard M
authors.initials: RM
authors.lastname: Pearson
mesh_terms: D003261:Contact Lenses; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity