A photochromic lens automatically adapts to weather conditions. A category 2 - 3 lens is suitable for cloudy and sunny weather. These glasses are semi...
A photochromic lens automatically adapts to weather conditions. A category 2 - 3 lens is suitable for cloudy and sunny weather. These glasses are semi-polarized, and partially reduce glare in the snow. A spherical lens provides a less distorted view than a cilindrical (flat) lens.