Sunglasses Filter Category
When searching for the perfect pair of sunglasses, the sunglasses filter category also plays an important role. So, what's a lens category? The lens category indicates whether a lens is more or less tinted. To protect your child from sun glare, you'll need to choose the appropriate lens category, which can vary depending on where and when your kids wear it. Here's a brief overview of all five categories:
Category 0: Clear/light lenses mostly for indoor use or fashion
Category 1: Pale lenses for overcast days
Category 2: Moderate lenses for glare protection
Category 3: Dark lenses for bright days
Category 4: Very dark lenses for intense sunshine, such as mountains and glaciers
What Type of Lens is Recommended for a Child?
For children, choose category 3 or 4 lenses for full coverage, minimise any risk and ensure the lenses and frame cover a great proportion of the eye area for full protection.
UV Filter Category 3
A category three lens offers the same level of protection against UV rays as a category four lens. The difference is in the amount of light it lets through and the protection against glare.
Generally, category three lenses are the go-to pick for sunny conditions, ideal for walks and family activities in fine weather. It is the most frequently used category for children's sunglasses. Meanwhile, for extremely bright surroundings, category four lenses are recommended for days spent at sea or in the mountains.
It's also worth noting that children commonly take off their sunglasses because of the discomfort of such dark-tinted lenses, so don't be tempted to buy category four lenses just because you think they'll provide extra protection – they only do their job in the right conditions. They will be too dark on your average sunny day in a UK park.