SYSTEM AND METHOD FOR CHARACTERISING THE OPTICAL QUALITY AND THE PSEUDO-ACCOMMODATION RANGE OF MULTIFOCAL MEANS USED FOR CORRECTING VISUAL DEFECTS

摘要

The invention relates to a system and a method for characterising the optical quality and the pseudoaccommodation range of multifocal means used for correcting visual defects. The invention is suitable for bifocal, multifocal or progressive intraocular lenses or contact lenses, multifocal corneal ablation or other multifocal configurations, and comprises: means for projecting the image of a point light source on the retina of a patient, and an assembly for directly recording the light reflected from the retina following the double passage of the light through the ocular means. The system comprises a first focus correction device inserted in the path of the light beam guided towards the retina, and a second focus correction device inserted in the light beam reflected from the retina and to be guided towards the recording means, both of said focus correction devices having independent means for controlling the operation thereof.