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They completely cut out glare and also provide complete UV protection. "Persol's lenses are scientifically formulated to offer outstanding protection against the sun's harmful rays, absorbing ...

Information on ultraviolet (UV) radiation is essential for our lives under the Australian sun. We have one of the highest levels of UV exposure and highest rates of skin cancer in the world. Sun ...

The Adelaide UV forecast and sun protection times are now available in the MetEye Text Views. More information about changes to UV products. It is important for all Australians or visitors to ...

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\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.