PRISMAŽ computer protection glasses from Peter Mandel:
- filter out aggressive blue light from TFT flat screens
- reduce light-related disorders in the hormonal system
- boost eyesight and contrast perception
- 100% UVA and UVB filter
For people working with computers, it protects against harmful blue light radiation, especially from TFT or FLAT screen monitors.
PC screens - especially TFT or FLAT screens, are hard on the eyes. There is evidence that flatscreen backlight can cause damage to the eye e.g. macular degeneration, due to its high proportions of blue light. Peter Mandel's PRISMAŽ computer filter glasses protect against high radiation of blue light in TFT flat screens, and are highly recommended for people who work regular hours with computers.
View this explanation as 
SLIDE TUTORIAL. Click to enlarge these pictures.
Blue light is focused on different level in the eye than long-wave light, which results in chromatic aberrations and blurredness. The spectrum graph at left shows which parts of the spectrum the PRISMAŽ computer protection glasses filers out to protect the eyes.
TFT Flat computer screens high in blue light
Mercury light sources can be found in the backlight of TFT flat screens (computer laptops, computer monitors, and TV flat screens), energy saving lamps and fluorescent tubes. The biggest strain to the eye is caused by TFT screens in front of which people may spend many hours daily during their working life. In addition to the radiation load coming from the screen the fluorescent lighting at the workplaces contributes to this negative effect.
Light with an extremely high proportion of blue from TFT
Flat screens are from mercury light used as a backlight. While the spectrum of the white daylight is composed of a harmonic proportion of colours, fluorescent lamps and TFT screens have a discontinuous spectrum. The graph of that spectrum shows high unnatural short-wave proportions of blue (blue, indigo, violet). However the red area, which is responsible for promoting blood circulation, shows low energy (see graph left).
Yellow Filter in PRISMAŽ glasses filters out blue spectrum
Looking directly into the source of light for extended periods of time means that the screen radiation hits - unfiltered - the spot of the sharpest vision, the so-called macula lutea, also called the yellow spot which is located on the back wall of the eyeball. Blue light is focussed on different level in the eye than long-wave light, which results in chromatic aberrations and blurredness. This is why pilots and athletes often wear yellow glasses, which filter the blue light, thus heightening visual acuity and contrast perception. Often AMD patients also get prescriptions for yellow glasses in order to protect their macula from blue light. Light with a high proportion of blue can also affect the hormonal balance by reducing the production of melatonin and boosting the generation of the stress hormones cortisol and ACTH.
