Oakley High Definition Optics (HDO) is the combination of the best and patented optical technologies. With the specially developed lens design of Oakley sun protection lenses, you experience the highest precision of vision. With the correction of prismatic and refractive error, Oakley enables perfect and aberration-free (distortion-free) vision. In comparative tests according to the Ansi Z87.1 standard with other sunglasses manufacturers, Oakley HDO achieves the best results, and this has been proven several times, for example in the pilot magazine 'Privat Pilot'. UV protection: Oakley sunglasses have a high-quality filter against harmful UV radiation. Oakley integrates the UV protection directly into the Plutonite plastic lens material. This blocks 100% of UVA, UVB and UVC rays as well as harmful blue light up to a wavelength of 400nm. Conventional sun protection lenses often have a thin protective filter on the surface. This can easily be scratched and therefore UV protection is no longer guaranteed. The Oakley UV filter is therefore not dependent on the tint or colour. Even very light-coloured Oakley lenses offer perfect UV protection. The strongly curved protective lenses cover the entire eye area and prevent light from entering from the side.