data. You can prevent cookie storage through your browser settings at any time. However, please note that you may not be able to use every function of this website. Furthermore, you can prevent the collection [...] functionality of the web page. If you do not wish us to recognize your computer again, you can prevent the saving of cookies on your hard drive by selecting the setting "Do not accept cookies" in your [...] hl=en . As an alternative to the browser plugin and on browsers on mobile devices, you may also prevent data collection by Google Analytics by activating the following link which will install an opt-out

these with new ones. The lens bulb on my illuminated magnifier is constantly blowing. How can I prevent this? You should only use a bulb which complies with the specified voltage and amperage values. You [...] quality is significantly improved in comparison to simple spherical lenses and aberrations are prevented or reduced. What are diffractive aspheric lenses? In addition to the aspheric properites, diffractive

such as the carotinoids lutein and zeaxanthin protect the eye against harmful UV light and thus prevent diseases such as macular degeneration. With advancing age as well as with illnesses like diabetes