vision usually precedes night blindness and the loss of visual acuity. Other symptoms include an increased sensitivity to glare, as well as problems with contrast and colour vision. At an advanced stage [...] stage, retinitis pigmentosa can eventually lead to blindness. Vision specialists

useful not only for the blind and visually impaired but also for people with colourblindness or red-green vision deficiency: With ColorSay the surroundings are scanned and the colours are expressed in spoken [...] Internet with the smartphone and reading messages or writing emails – all are no problem whatsoever for blind or visually impaired people when they have the right apps and operating tools. Various functions and [...] with small, unscalable app symbols, the Android operating system has size-adjustable widgets. The colourful tiles of the Windows phone can be adjusted individually in format and position. Selecting a larger

markers (reading line or “blind”)Additional tactile positioning and orientation markers on the housingViewing modes in true colour and up to 14 contrast-enhanced false colour modesPhoto function with option [...] move or at homePhoto function with option of saving photos on inserted SD cardLarge range of false colour combinationsCan also be used on the TV screen as screen-reading device via HDMIProduct Accessori [...] indicator (screen icon) orientation aids on the housing positioning aids on the housingDisplay modestrue colours white/black black/white yellow/black black/yellow yellow/blue blue/yellow green/black black/green

markers (reading line or “blind”)Additional tactile positioning and orientation markers on the housingViewing modes in true colour and up to 14 contrast-enhanced false colour modesPhoto function with option [...] move or at homePhoto function with option of saving photos on inserted SD cardLarge range of false colour combinationsCan also be used on the TV screen as screen-reading device via HDMIProduct Accessori [...] indicator (screen icon) orientation aids on the housing positioning aids on the housingDisplay modestrue colours white/black black/white yellow/black black/yellow yellow/blue blue/yellow green/black black/green

markers (reading line or “blind”)Additional tactile positioning and orientation markers on the housingViewing modes in true colour and up to 14 contrast-enhanced false colour modesPhoto function with option [...] move or at homePhoto function with option of saving photos on inserted SD cardLarge range of false colour combinationsCan also be used on the TV screen as screen-reading device via HDMIProduct Accessori [...] indicator (screen icon),orientation aids on the housing,positioning aids on the housingDisplay modestrue colours,white/black,black/white,yellow/black,black/yellow,yellow/blue,blue/yellow,green/black,black/green

comparison to simple spherical lenses and aberrations are prevented or reduced. What are diffractive aspheric lenses? In addition to the aspheric properites, diffractive aspheric lenses have a special surface [...] of its image quality. What is the difference between Fresnel lenses and diffractive lenses? The Fresnel lens refracts light. Diffractive lenses defract light. [...] Fraunhofer Institute for Silicate Research (ICS) especially for the lenses manufactured by Eschenbach Optik. It provides the lenses with all-round protection and ensures lasting comfort of vision for the

Particularly scratch-proof lenses with high visual and wearing comfort.The half-eye design facilitates orientation above the eyewear.Product PropertiesMaximum protection of lenses against mechanical influences [...] Magnifying reading glasses noves MONO Product BenefitsMonocular reading glasses with magnifying lenses and visually appealing, discreet design.The thickness of the lens is only 4.5 mm and this means that [...] influences and dust is provided by high-precision, diffractive nanostructures on the insides of the lenses.Aspheric PXM® lightweight lens, cera-tec® coated for a distortion-free image with edge-to-edge sharpness

high magnification.These exceptionally discreet and thin lenses are particularly suitable for high optical powers.Particularly scratch-proof lenses with high visual and wearing comfort.Product Propertie [...] with edge-to-edge sharpness.The lenses have a very subtle appearance. They have a uniform thickness of 4 mm, regardless of the optical power.Maximum protection of lenses against mechanical influences and [...] and dust is provided by high-precision, diffractive nanostructures on the insides of the lenses.The half-eye design facilitates orientation above the eyewear.Weight only 18 g.The spring-hinged frame has

Particularly scratch-proof lenses with high visual and wearing comfort.The half-eye design facilitates orientation above the eyewear.Product PropertiesMaximum protection of lenses against mechanical influences [...] glasses noves MONO 6x Art. Nr. 168161 Product BenefitsMonocular reading glasses with magnifying lenses and visually appealing, discreet design.The thickness of the lens is only 4.5 mm and this means that [...] influences and dust is provided by high-precision, diffractive nanostructures on the insides of the lenses.Aspheric PXM® lightweight lens, cera-tec® coated for a distortion-free image with edge-to-edge sharpness

Particularly scratch-proof lenses with high visual and wearing comfort.The half-eye design facilitates orientation above the eyewear.Product PropertiesMaximum protection of lenses against mechanical influences [...] glasses noves MONO 5x Art. Nr. 168151 Product BenefitsMonocular reading glasses with magnifying lenses and visually appealing, discreet design.The thickness of the lens is only 4.5 mm and this means that [...] influences and dust is provided by high-precision, diffractive nanostructures on the insides of the lenses.Aspheric PXM® lightweight lens, cera-tec® coated for a distortion-free image with edge-to-edge sharpness