acuity of 0.1 is sufficient for a person to be able to orientate themselves outdoors. However, a visual acuity of 0.8 is required for reading travel timetables. Other minimum values include: 0.4 for watching [...] watching television, 0.5 for reading the newspaper and 0.7 for reading a telephone directory. Is the ability of the eye to read solely dependent on visual acuity? No. In order to be able to read we require

Eschenbachhas a virtually unlimited lifespan.Product PropertiesDiffractive, aspherical lens 2.5.0x / 6 dpt magnificationIllumination: bright, super-flat SMD-LEDProduct dimensions: 113.5 x 63 x 8.8 mmLens

Eschenbachhas a virtually unlimited lifespan.Product PropertiesDiffractive, aspherical lens 2.5.0x / 6 dpt magnificationIllumination: bright, super-flat SMD-LEDProduct dimensions: 113.5 x 63 x 8.8 mmLens

Miscellaneous Properties (magnifying glasses) NotesDelivery incl. usable measuring scale, graduation 0.5mm and 1/64 inchmagnifier headLupentopf inkl. LED-Batteriegriff Operating unit (magnifying glasses)

usable measuring scale, graduation 0.5mm and 1/64 inch Lupentopf, lose system varioPLUS15507438 dpt10 x Ø 35 mm Delivery incl. usable measuring scale, graduation 0.5mm and 1/64 inch Lupentopf inkl. L

1511001,-2,-3,-4 Technical data Lens properties Lens Size90 x 54 mm Miscellaneous Properties Notes3,0x = Handelsvergrößerung Optical Properties Magnification3 xDioptre8 dptMaterialsmanual_mobiluxLED_BA

1511001,-2,-3,-4 Technical data Lens properties Lens Size90 x 54 mm Miscellaneous Properties Notes3,0x = Handelsvergrößerung Optical Properties Magnification3 xDioptre8 dptMaterialsmanual_mobiluxLED_BA

Time (Battery)/Battery run time3 hCharging time4 hPower supply charging deviceIn: 100-240VAC 50/60Hz 0.3A max, Out: 5VDC 2.5AOperating temperature10 – 40 °CCharging portUSB-CPort for data transmission to [...] yearsWarranty (Battery)6 monthsMaterialsfirmware_16502_v115_card_202206174.3 MBmanual_16502_ab_Rev_A_v1.0_web_2021-04_multi4.4 MBAccessories Accessories Art. Nr. 1650208 smartlux® DIGITAL Bumper show Accessory

Time (Battery)/Battery run time3 hCharging time4 hPower supply charging deviceIn: 100-240VAC 50/60Hz 0.3A max, Out: 5VDC 2.5AOperating temperature10 – 40 °CCharging portUSB-CPort for data transmission to [...] yearsWarranty (Battery)6 monthsMaterialsfirmware_16502_v115_card_202206174.3 MBmanual_16502_ab_Rev_A_v1.0_web_2021-04_multi4.4 MBAccessories Accessories Art. Nr. 1650208 smartlux® DIGITAL Bumper show Accessory

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 displayed must be doubled in size in order for it to be recognised.