What should you check when choosing sunglasses?

01 · USE

Start with where you will actually use them

Sunglasses for city walking and sunglasses for a bright summer beach do not necessarily need the same light level. Cloudy days, ordinary sunshine and highly reflective environments can feel very different.

Before choosing a tint percentage, define the main use: commuting, daytime driving, long outdoor wear or beach use.

The first decision is not how dark the lens should be, but where the sunglasses will be used most often. Urban walking, daytime driving, beaches, water activities and long outdoor exposure involve different overall brightness and reflected-light conditions. The same lens can feel adequate in city shade and insufficient on an open beach, so the environment should determine the priority of tint, polarization, mirror treatment and coverage.

02 · TINT

The darkest lens is not automatically the most comfortable

Lens tint programs may offer levels such as 50%, 75% and 85%. A higher number generally looks darker, but a product's tint label and its measured visible light transmission are not always a simple one-to-one conversion.

It is easier to compare in steps: a lighter 50% range, a clearly sunglass-like 75% range, and an 85% range for stronger sunlight.

Tint labels such as 50%, 75% or 85% can be useful practical steps within a laboratory or supplier tint program, but they should not automatically be treated as globally standardized visible-light-transmission values. Actual brightness depends on colour, substrate, coatings and the manufacturer system. Use the percentage as a starting comparison, then check actual VLT or the applicable filter category when safety or road use matters.

03 · PERSONAL

Comfortable tint can differ from person to person

Someone who is more sensitive to light may prefer a darker lens in the same weather, while another person may find the same view unnecessarily dim.

Choosing tint is less about finding one universal answer and more about finding a comfortable range for the intended environment.

Light sensitivity varies from person to person, but more sensitive does not always mean choose darker. An excessively dark lens can become uncomfortable in shade or during indoor transitions, and a strong colour filter can alter colour perception. The useful level is the one that reduces glare in the intended environment while still allowing stable recognition of the surroundings.

04 · COLOR

A colour that looks good is not always the colour that feels best

Grey, brown and green lenses can change colour balance and perceived contrast even at similar tint levels.

Do not judge only in a mirror. Look through the lens at white surfaces, roads, trees and faces to see whether the colour remains comfortable.

Lens colour changes more than appearance because it changes spectral transmission. Grey, brown and green lenses that look equally dark can produce different colour balance and perceived contrast, and adding a mirror can make the colour seen from outside differ from the colour experienced by the wearer. Matching the frame cosmetically and choosing a comfortable visual tint are separate decisions.

05 · FIT

The final decision happens on the face

Even an excellent lens is hard to wear for long if the frame slips, touches the cheeks or sits close enough for eyelashes to hit the lenses.

A good sunglass frame should cover the eye area while remaining stable without unnecessary pressure on the nose, temples or ears.

Finally, evaluate the lens on the face. If the bridge does not support the front or the frame is too wide and keeps sliding, the optical design will not remain in the intended position. Lash or cheek contact can also make a technically good sunglass uncomfortable over time. Real-world quality is the combination of lens function, bridge support, frame width, eye-to-lens distance and temple support.

GLANOS LENS CHECK

A practical order for choosing sunglasses

CAUTION

Dark tint and UV protection are not the same thing

GLANOS EYEWEAR

Eyewear comfort has reasons.