Carl Zeiss Vision launches its hardest ophthalmic lens

Carl Zeiss Vision has launched what it said was its hardest ever lens, DuraVision Platinum.

The manufacturer said the new DuraVision Platinum AR coating was made up of a series of coating layers, densely packed using ion-assisted deposition. The resulting lens surface was said to be three times harder than the previous generation of hard anti-reflective coated plastic Zeiss lenses, and 35 per cent harder than AR coated mineral Zeiss lenses.

The lenses are dirt-resistant and use an oleophobic coating to aid cleaning along with a super-hydrophobic coat which allows fluid and dirt to bead and then roll off the lens. A blue reflex colour was said to produce 20 per cent less luminous reflectance than conventional green AR coated lenses from Zeiss.