01 / A closer look

Three lens qualities worth looking for.

A useful way to understand sunglasses is to look at three separate qualities: how much visible light they transmit, how effectively they filter UV, and how little they scatter or redirect the light you want to see.

The tested USWING C.T.PAN COL. BLK/C6 configuration gives us a concrete example. Its February 2026 inspection recorded:

Together, these figures describe a lens that reduces incoming visible light, transmits very little solar-weighted UVA and shows low measured scatter. Each number tells a different part of the story.

02 / Understand the light

Choose a tint for the conditions. Check UV protection separately.

Visible-light transmittance, or VLT, tells you how much visible light passes through a lens, weighted for daytime vision. At around 31% VLT, the tested lenses let through roughly three-tenths of that light. This is the measurement behind their tint darkness.

This pair is category 2, within the report’s VLT interval of greater than 18% and up to 43%. Categories help you compare light transmission and choose for the conditions. A higher category means a darker filter, not automatically a better lens.

UV filtering: protection beyond what you can see.

UV sits outside the visible spectrum, so lens darkness cannot tell you how much UV gets through. That is why a separate UV measurement matters. The tested USWING pair recorded very low solar UVA and UVB transmission:

Both lenses also transmitted closely matched amounts of visible light. That consistency is another useful quality check when considering a pair of sunglasses.

UV figures are solar-weighted measurements. The reported 0.00% is rounded to the stated precision; it does not mean absolute zero. These results do not establish a measured 400 nm cut-off.

Blue light and polarisation, explained.

Blue light is part of visible light, so it needs its own assessment. UV results cannot be converted into a blue-light blocking percentage. This sample’s report does not provide a tested blue-light filtering percentage.

USWING describes its golf lenses as non-polarised. Polarisation is a separate way of controlling certain reflected light; it is not the same as tint darkness or UV filtering. When choosing eyewear, consider those properties individually.

03 / The detail in the view

Clarity begins with optical precision.

On the course, your view carries information: grass texture, the edge of a shadow, the outline of a distant target. Alongside light transmission, lens quality depends on controlling scatter and unwanted optical power.

Low haze. Less light scattered within the lens.

Haze measures light scattered by a lens under specified test conditions. The C.T. Pan sample recorded 0.40% and 0.42%, both below the report’s 3% limit. Low measured haze is a meaningful indicator of optical quality because it describes how little light was scattered in this test.

Near-zero power for a non-prescription lens.

A non-prescription sunglass lens is designed to manage light without adding a prescription. In this sample, spherical power was 0.01 dioptres in each lens, and cylindrical power was 0.01 D and 0.00 D. These values were close to zero and within the reported limits.

A dioptre (D) measures focusing power. Prism describes displacement of the view. The small horizontal and vertical prism differences were within their respective limits of 1.00 and 0.25 cm/m. The spherical- and cylindrical-power limits were ±0.12 D and ≤0.12 D.

04 / Made to be worn

Quality that goes beyond the tint.

Eyewear has to do more than look good on a product page. It is handled, folded and worn against the skin. The inspection assessed the tested eyewear’s response to mechanical stress, perspiration and irradiation, alongside its optical properties.

Test passes do not predict a number of years of use. Higher impact levels and abrasion resistance were not assessed; the glasses are not established by these results as protection against a golf-ball strike.

05 / Put the knowledge to work

Find the right lens. Then find your fit.

Start with the light you expect to play in. Then consider frame fit, coverage and whether you need a prescription. Those choices make the technical details useful.

Inside the tested C.T. Pan configuration.

The marking 59□16–140 gives you a practical starting point for comparing sizes. Check how the frame sits on your nose, how the temples feel and whether the lenses cover your view comfortably when you take your address position.

Choose for your actual round.

For bright conditions, check the lens’s filter category and UV information. For overcast conditions or prescription needs, look at the specifications for that exact option. A different tint or prescription configuration can have different optical characteristics.

With the right specifications in hand, you can choose eyewear for its light management, optical quality and fit—qualities that matter every time you put it on.

06 / Confidence in the detail

Know what sits behind the numbers.

The 2026 inspection assessed the identified C.T. Pan sample against GB 39552.1–2020, using GB/T 39552.2–2020 test methods. It concluded that the applicable tested items met the stated requirements. Four pairs were submitted; most individual tests used one pair.

A separate optical test from 2024.

A supplier-held test analysed on 14 May 2024 assessed a different, uniformly tinted green-lens sample against the transmittance requirements cited as AS/NZS 1067:2016, sections 5.2 and 5.3. Its anonymous summary is shown below, separately from the 2026 results.

The UV entries retain the record’s three-decimal fractional format; rounded zero does not mean absolute zero. This separate sample is not a specification for the current retail range. Its record also warns against driving in twilight, at night or under dull light conditions.

Our approach is simple: explain the property, show the measurement and identify the sample. It gives you a more informed way to understand USWING eyewear and choose the pair that fits your game.