01 · TOP
The upper part provides stronger light reduction
Gradient lenses are usually darker at the top and become lighter toward the bottom. Looking straight ahead or slightly upward therefore uses the darker zone.
The upper tint often matters most when walking outdoors or driving while looking ahead.
A gradient lens changes transmission vertically, usually with a darker upper region and a lighter lower region. Looking straight ahead or upward therefore provides more attenuation, while downward gaze passes through a brighter zone. Unlike a uniform tint, the wearer gaze position becomes part of the brightness experience.
02 · BOTTOM
The lower zone can remain brighter
Looking down at a phone, menu or nearby object uses a lighter part of the lens.
People who find a uniform dark lens too enclosed may prefer this difference.
The lighter lower area can be convenient for a phone, menu or instrument panel, but it also provides less attenuation from below. In snow, sand or other environments with strong lower-field reflection, that same feature can feel less protective than a uniform dark lens. The advantage and limitation come from the same gradient structure.
03 · CITY
It can be useful when moving frequently between indoor and outdoor spaces
City use often alternates between bright outdoor light and shops or covered areas. A lighter lower zone can feel convenient during these transitions.
The actual effect depends on lens height and where the eye sits in the frame.
A gradient can feel convenient for driving because the upper part can attenuate bright sky while the lower portion leaves instruments brighter, but not every gradient is automatically road-approved. Overall visible transmission, colour recognition, filter category and the product driving suitability still need to be checked.
04 · STRONG REFLECTION
Strong light from below can reduce the advantage
At a beach or over water, strong reflections can enter from the lower visual field. In that setting, a lighter lower zone may feel insufficient.
A uniform tint or polarized lens may fit the environment better.
The effect also depends on how the frame sits on the face. If the frame slides or the lens is very shallow, the transition between dark and light zones can move into a different part of the visual field. Evaluate the gradient in the actual wearing position while looking upward, straight ahead and downward.
05 · NUMBERS
Gradient tints may be written with two numbers such as 75/25
Products may describe the upper and lower tint strengths separately.
What matters is not only the printed pair of numbers, but where the wearer's eye actually looks through the finished lens.
Labels such as 75/25 may be used within tint programs to describe relative upper and lower darkness, but they should not automatically be converted into two exact VLT values. Manufacturers can use different tint systems, and colour and substrate also influence transmission. Use actual transmission data when precise performance matters.
GLANOS LENS CHECK
When choosing a gradient tint
Check whether straight-ahead viewing is dark enough.
Make sure near viewing is not too bright or too dark.
Consider vertical lens size and eye position.
Separate city transitions from strongly reflective settings.
Compare straight-ahead and downward viewing yourself.
CAUTION
The benefit of a gradient lens depends on the environment
A lighter lower area is not always an advantage where strong reflected light comes from below.
GLANOS EYEWEAR
Eyewear comfort has reasons.
Gradient · 75/25 · Tint · City · Gaze