Abstract: A system for preventing an unauthorized and/or hazardous use of a vehicle. The system may include a first sensor; a driver recognition module in communication with the first sensor, the driver recognition module is configured to determine an identity of a driver based on readings of the first sensor; a second sensor; a driver condition determination module in communication with the second sensor, the driver condition determination module is configured to determine a condition of the driver based on readings of the second sensor; and a hazardous driving prevention module in communication with the driver recognition module and driver condition determination, the hazardous driving prevention module is configured to determine and perform one or more actions of a predetermined set of actions based on the determined identity and determined condition of the driver.

Abstract: An optical lab is provided with a set of different progressive power semi-finished spectacle lens blanks for different combinations of base curve, add power, cylinder and axis, where each semi-finished lens blank in the set has an unfinished surface and a progressive surface with a particular base curve and a particular add power. The progressive surface has been designed to provide optimal optical performance of a lens one surface of which is the progressive surface and another surface of which is a toric surface of a particular non-zero cylinder and a particular axis. Given a prescription of an astigmatic presbyope, the optical lab will select from the set the appropriate semi-finished lens blank and will surface the unfinished surface with the appropriate toric surface so that the progressive power spectacle lens matches the prescription.

Abstract: An optical lab is provided with a set of different progressive power semi-finished spectacle lens blanks for different combinations of base curve, add power, cylinder and axis, where each semi-finished lens blank in the set has an unfinished surface and a progressive surface with a particular base curve and a particular add power. The progressive surface has been designed to provide optimal optical performance of a lens one surface of which is the progressive surface and another surface of which is a toric surface of a particular non-zero cylinder and a particular axis. Given a prescription of an astigmatic presbyope, the optical lab will select from the set the appropriate semi-finished lens blank and will surface the unfinished surface with the appropriate toric surface so that the progressive power spectacle lens matches the prescription.