■LENS CATEGORY | Lens Category
CATEGORY 0: Clear lens/Indoor orientation; Vision transmittance: Over 80.0% of less than 100%
CATEGORY 1: Bright/cloudy weather; Vision transmittance: Less than 80.0% than 43.0%
CATEGORY 2: Neutral color/sunny weather, for everyday use; Vision transmittance: Less than 43.0% than 18.0%.
CATEGORY 3: Dark / Everyday use, Beach Orientation, Vision Transmittance: Less than 8.0%
CATEGORY 4: Very dark / Places with strong sunlight such as mountain and ocean, Visibility Transmittance: Less than 8.0%