BCLA CLEAR – Contact lens optics

The most fundamental aspect of a contact lens is its optics; the manner in which refraction light managed to optimise vision clinical benefit wearer. This report presents contemporary information on optical structure eye and models employed understand correction refractive error. design, measurement assessment spherical, aspheric, toric, multifocal myopia control lenses are described. complexity variety recognised detailed provided for alternating, simultaneous, diffractive, annular, aspheric extended depth field designs. In terms assessment, review of: visual acuity, contrast sensitivity, through focus curves, reading performance, peripheral refraction, toric displacement realignment patient reported outcomes. Overall, paper aims serve as resource prescribing clinician, who can corrections patients by building rationale these devices; also highlights future opportunities research innovation.