digital magnifier. Product BenefitsRelaxed reading due to non-reflective, high contrast display2 in 1: handy reading device for when you‘re on the move plus simple screen-reading device for use at homeEasy [...] tilted for comfortable viewing angle4 to 12x magnification (hand-held at a distance of 5 cm approx. 1.9- to 4.5x)5 viewing modes: true colour, contrast-enhanced black/white, white/black, black/yellow and [...] icon)Display modestrue colours white/black black/white yellow/black black/yellow Dimensions Dimensions7.5 x 21 x 4 cmWeight230 g Extended features Reading guidelinereading line & reading lineLive image from
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, the eyeball is [...] There is no standard answer to this question, as it differs for each vision task: a visual acuity of 0.1 is sufficient for a person to be able to orientate themselves outdoors. However, a visual acuity of [...] timetables. Other minimum values include: 0.4 for 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
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