enclosed magnifier heads made from a light material.To achieve a uniform reading distance, Eschenbach Optik recommends using the system varioPLUS in combination with a reading stand (Item No. 1605).Product [...] age-related shaking or Parkinson‘s disease).Magnifier heads with a diameter greater than 58 mm (Item No. 15539-, 15549-, 15599-) are fitted with a retractable red reading line for easier line orientation and [...] Lens SizeØ 35 mm Miscellaneous Properties NotesLieferung inkl. einsetzbarer Mess-Skala,Teilung 0,5mm und 1/64 inchmagnifier headLupentopf, lose Optical Properties Magnification10 xDioptre38 dptMaterials
enclosed magnifier heads made from a light material.To achieve a uniform reading distance, Eschenbach Optik recommends using the system varioPLUS in combination with a reading stand (Item No. 1605).Product [...] age-related shaking or Parkinson‘s disease).Magnifier heads with a diameter greater than 58 mm (Item No. 15539-, 15549-, 15599-) are fitted with a retractable red reading line for easier line orientation and [...] Lens SizeØ 35 mm Miscellaneous Properties NotesLieferung inkl. einsetzbarer Mess-Skala, Teilung 0,5mm und 1/64 inchmagnifier headLupentopf inkl. LED-Batteriegriff Optical Properties Magnification10 xDioptre38
enclosed magnifier heads made from a light material.To achieve a uniform reading distance, Eschenbach Optik recommends using the system varioPLUS in combination with a reading stand (Item No. 1605).Product [...] age-related shaking or Parkinson‘s disease).Magnifier heads with a diameter greater than 58 mm (Item No. 15539-, 15549-, 15599-) are fitted with a retractable red reading line for easier line orientation and [...] Lens SizeØ 35 mm Miscellaneous Properties NotesLieferung inkl. einsetzbarer Mess-Skala,Teilung 0,5mm und 1/64 inchmagnifier headLupentopf, lose Optical Properties Magnification10 xDioptre38 dptMaterials
tested can recognise a test symbol that has a line width of less than 1 minute of arc, then their visual acuity will be 1. If the person being tested has a visual acuity of only 0.5, then the test symbol [...] acuity, a variety of test symbols are used by ophthalmologists and opticians. In addition to Landolt rings, Snellen charts, letters and numbers, symbols can also be used which are displayed at a specified [...] with which an object is focused on the retina. Reduced visual acuity Visual acuity is influenced by a wide variety of factors, which are determined not only by the eye itself but also environmental influences
directory Visual acuity 0,5 Reading the newspaper Visual acuity 0,4 Watching television Visual acuity 0,1 Orientation outdoors As the table shows, a very clear distinction must be made between the different vision [...] order to carry out a vision task. The following table gives several examples: Required visual acuity Vision task Visual acuity 0,8 Reading travel timetables Visual acuity 0,7 Reading a telephone directory [...] that a special magnifying vision aid is usually required for each vision task. The right vision aid for every vision task Eschenbach Optik therefore offers those suffering from visual impairment a wide
dioptre is equal to the 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 [...] long-sightedness. What is a vision defect? An eye is described as having a vision defect when it has less than normal vision. The term is very imprecise, as a vision defect can have a wide variety of causes [...] long-wave light. How can a polarisation filter improve my vision? The light rays emitted from a light source oscillate in waves which are scattered in all directions. A polarisation filter in a spectacle lens filters
images onto televisionsUSB port, Type C port for transmitting images onto a computer (PC and Mac)Operating time: 3.5 hWeight: 460 gIncluded in delivery: HDMI cable, USB Type C cable, 4 GB SD card [...] attery run time3.6 hCharging time3 hPower supply charging deviceIn: 100-240VAC 50/60Hz 0.6A max, Out: 9VDC 2.5AOperating temperature10 – 40 °CCharging portRund-HohlsteckerPort for data transmission to [...] of view of 70 mmDynamic Line Scrolling (DLS), the line area on the display is moved by the touch of a buttonOptional orientation markers (reading line or “blind”)Additional tactile positioning and orientation
images onto televisionsUSB port, Type C port for transmitting images onto a computer (PC and Mac)Operating time: 3.5 hWeight: 460 gIncluded in delivery: HDMI cable, USB Type C cable, 4 GB SD card [...] attery run time3.6 hCharging time3 hPower supply charging deviceIn: 100-240VAC 50/60Hz 0.6A max, Out: 9VDC 2.5AOperating temperature10 – 40 °CCharging portRund-HohlsteckerPort for data transmission to [...] of view of 70 mmDynamic Line Scrolling (DLS), the line area on the display is moved by the touch of a buttonOptional orientation markers (reading line or “blind”)Additional tactile positioning and orientation