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A great choice if you need bifocal powers when out sporting in the light or dark. 4/5 Road.cc

The BZ Optics PHO Fluro Yellow Frame with Photochromic Bi Focal Lens is a fully featured item of sports eyewear, for people who need bi-focal assistance in all conditions from darkness to bright glare. For £99.99 with interchangeable lenses, they're a pretty good pair of goggles in their own right.

Being one of challenged ocular capacity, I can wholeheartedly sympathise with the founders of BZ Optics: two Australian sportsmen who found with advancing years their ability to read various bits of kit – bike computers, phones, GPS units, watches, maps – was decreasing. Add into the mix the need to operate safely on road or water in conditions ranging from pre-dawn dark to bright Australian sunshine (British readers: see here (link is external)) and the sporting eyewear market wasn't delivering. You could have bi-focal lenses, or photochromic lenses, or changeable lenses. But not all at once.

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