headLupentopf inkl. LED-Batteriegriff Operating unit (magnifying glasses) Magnification12.5 xDioptre50 dptMaterialsmanual_system varioPLUS.pdf2.2 MBmanual_scale system varioPLUS.pdf461.3 KBProduct [...] lens for additional magnification.Particularly scratch-proof lens with high visual comfort.Choice of 3 different colour temperatures via filters.Product PropertiesAspheric PXM® lightweight lens, cera-tec®
headLupentopf inkl. LED-Batteriegriff Operating unit (magnifying glasses) Magnification5 xDioptre20 dptMaterialsmanual_system varioPLUS.pdf2.2 MBmanual_scale system varioPLUS.pdf461.3 KBProduct overview [...] lens for additional magnification.Particularly scratch-proof lens with high visual comfort.Choice of 3 different colour temperatures via filters.Product PropertiesAspheric PXM® lightweight lens, cera-tec®
change the LEDs on an LED magnifier? The LEDs used for illuminating Eschenbach Optik products have a virtually unlimited service life. They therefore do not need to be changed. What can I do if my LED magnifier [...] reciprocal value of the focal length of a lens measured in metres: a power of +5 dpt therefore has a reciprocal length of 1/5 metres or 20 centimetres. What is long-sightedness? In the case of long-sightedness [...] read we require a functioning retinal surface of around 2.5 degrees to the left and right of the fixation point, i.e. a visual angle of around 5 degrees in total. A reading angle is necessary as our eyes
