World largest visual filed available The wide 35 degree aperture reduces possible accomodation during testing. Both enable the operator to position the patient properly. White LED illumination. The anterior segment illumination by white LED's assist the operator in his corneal alignment and PD setting. Prism step settings of 0.1 and 0.5 Settings of 0.1 prism diopters offers more accurate prism measurements.
Patients experience more comfort during the examination.
For a quick screening of the prism values 0,5 prism diopters can be set.