The validity of labeled parameters of aphakia-correcting soft contact lenses

This study examines the validity of labeled parameters of aphakia-correcting soft contact lenses. The Nikon Projection Lensometer (NPL) and the Hydro-Vue Soft Lens Analyzer (HSLA) were used by two independent inspectors to measure 51 aphakia-correcting lenses. The contact lens power, diameter, and base curve were measured by each of the inspectors and compared to the labeled parameters. All parameter relations that were analyzed revealed that measurements made by the inspectors were not statistically different (p greater than 0.05) from each other and that their combined measurements were not statistically different (p greater than 0.05) from the labeled values.