Patent ID: 8851677
Filing Date: 2014-10-07
Classification: G02C

Abstract:
1. An arrangement comprising: a spectacle lens with changeable optical effect; an effect-setting apparatus for setting the optical effect of said spectacle lens based on intended-setting data; a memory apparatus for storing first intended-setting data for adjusting a first predetermined optical intended effect; said first predetermined optical intended effect being determined from a first refraction measurement on an eye of a spectacle wearer for whom said spectacle lens is specified; said memory apparatus further being for storing second intended-setting data for adjusting a second predetermined optical intended effect; said second predetermined optical intended effect being determined from a second refraction measurement on said eye; and, a supply apparatus for supplying said first intended-setting data or said second intended-setting data to said effect-setting apparatus; wherein said first optical intended effect is an effect determined from a refraction measurement on said eye carried out under a first contrast condition and said second optical intended effect is an effect determined from a refraction measurement on said eye carried out under a second contrast condition departing from said first contrast condition.