Tinted lenses for eyewear: it’s not just an aesthetic choice
On the market you can now see them “of all colors”. Sunglasses with colored lenses , however, are not only an aesthetic choice but respond to functional needs that make them useful on various occasions.
How to choose the lens color of your sunglasses
Probably choosing heart-shaped glasses with pink lenses is attributable to a purely aesthetic choice. But the reason why there are filters for lenses of different colors is another: to ensure maximum comfort and protection for the eye, in particular external conditions.
In principle, if the light is low as in winter, the lens may be lighter but must necessarily become darker as the intensity of sunlight increases, both in summer and at high altitudes during the winter.
Let’s see below what are the main characteristics of the different types of filters.
Grey filter
It cuts ultraviolet and infrared rays, maintaining a good color balance. The gray lens, together with the black one, is performing both in summer and in winter but unlike the green lenses it guarantees greater protection. To be recommended without a doubt to those with light eyes.
Brown filter
It absorbs ultraviolet and infrared rays, optimizing visibility in foggy weather. The perception of colors, through a filter of this color, is not perfect. This is why sunglasses with brown lenses are perfect in summer but are less comfortable in winter, with little light or low light.
Green filter
It absorbs ultraviolet and infrared rays but does not ensure maximum fidelity from a chromatic point of view. However, glasses with green lenses are very versatile, so they can be used both in summer and in cloudy conditions or low sunlight, such as in winter.
Blue filter
The blue filter is usually used only for aesthetic reasons and indeed, its actual usefulness is questionable, as these lenses allow both blue light and ultraviolet rays to pass through, therefore not guaranteeing complete protection to the eye.
Yellow filter
Glasses with yellow filter lenses cut through ultraviolet rays and are useful in low light because they accentuate contrasts. This kind of glasses are not very suitable in summer, as they cannot shield intense light. Instead, they are great for counteracting the blue light emission from computers and mobile devices, which cause headaches and eye strain.
Red filter
This type of lens is usually used in snowy weather, as it increases visual depth and is very restful for the eyes.
Gradient lenses
They are those that start from the top with a darker color until they gradually become lighter downwards. A type of lens that is perfect for driving, for example, as it manages to protect the eye from the light coming from the sky, lightening and consequently improving visibility when the gaze turns towards the base, such as, for example, when staring at the asphalt.
Photochromic lenses
These are the lenses that darken or lighten automatically, when you go outside or enter a closed place. A convenience without a doubt because it allows you to keep only one pair of glasses on all occasions.
The dark color is activated only when it detects sunlight, so in the house or in the presence of artificial light, they always remain transparent.
