Transitions®(S)

Measures to protect the eyes from sunburn and UV rays are essential for the future health of our eyes.

Clarity indoors, Comfortable darkness outdoors
Protection of the eyes from UV rays and visible light rays (strong sunlight, glare)

Just as ultraviolet rays are known to present the risk not only of sunburn, but also skin cancer, UV rays may also damage the eyes and cause serious conditions such as cataracts and macular dystrophy. The Transitions®(S) lens blocks almost 100% of harmful UV-A and UV-B rays and provides comfortable vision.

Range of protection from sunlight

Protects the eyes from ultraviolet rays and visible light rays (glare) to maintain healthy daily vision

Transitions®(S) can be used in the same way as with normal glass lenses regardless of whether you are indoors or outdoors.The two functions of clear lenses and colored lenses are exhibited in one lens.Color of the lens : Gray / Brown

Clear indoors,Medium degree of gray on a slightly cloudy day (Brown),Dark gray outdoors (Brown)

The lens density changes depending on the amount of ultraviolet rays

These lenses automatically adjust the amount of light that enters your eyes, so this increases the quality of vision (contrast sensitivity).If your lenses are struck by the ultraviolet rays contained in sunlight, their color will become darker; as the ultraviolet rays become weaker, the color of the lenses will return back to clear.

Clear indoors

These lenses maintain the same degree of clearness indoors as with regular clear lenses.

Blocks almost 100% of harmful ultraviolet rays

These lenses automatically cut out almost 100% of harmful ultraviolet rays. Moreover, they reduce eye tiredness and stress by decreasing glare.

Respond easily to reflected light as well as direct sunlight

These lenses catch sunlight quickly under various conditions in everyday life. They also respond even better to reflected light and light from behind.

Strong density even on hot days

These lenses reduce the dependence on the temperature that has become a bottleneck in photochromic lenses (lenses that darken when struck by ultraviolet rays) and so the color density has been improved in a comparison over the same period under various temperatures with our conventional “Transitions®” lenses.

Colouration/fading speed for daily use with no discomfort

One of the major features of the Transitions®(S) lens is its coloration/fading speed. When the wearer steps outdoors, the lens reacts to UV rays to quickly change to a comfortably dark lens color, quickly changing back to a clear lens when the wearer returns indoors.The fading speed has been improved by 20% compared with our conventional “Transitions®” lenses.

Frequently asked questions

Could you tell me about the functions of the Transitions®(S) lens?
The special photochromic dye used in the Transitions®(S) lens darkens when exposed to UV rays and returns to a clear state as the intensity of the UV rays becomes weaker. This enables change to a natural, comfortable color matched to changes in light. The Transitions®(S) lens constantly functions to block out UV rays whether in a clear or colored state. Changes in the lens colors in accordance with the intensity of UV rays or temperatures serve to protect your eyes from harmful rays present in visible light.
Does Transitions®(S) lens take the place of clear lenses?
In addition, are they also suitable for use indoors?
Yes. Transitions®(S) demonstrates an exceptional degree of clearness, so they can be used in the same way as with clear lenses. Currently, we also recommend these to those who wear clear lenses.
How quickly does the Transitions®(S) lens react?
The Transitions®(S) lens begins to darken the moment it is exposed to UV rays. The greater the UV-ray intensity, the darker the color of the lens. The lens reverts to a clear state when no longer exposed to UV rays. When you step outside, the lens will quickly darken and will return to a clear state once you return indoors in accordance with the temperature. Due to the properties of the photochromic dye, the higher the temperature, the faster the speed of return to a clear state: Conversely, the lower the temperature, the slower the speed of return to a clear state.
Does the degree of darkness of the Transitions®(S) lens differ depending on factors such as
the lens type or strength?
Basically, the lens darkness remains constant regardless of differences in lens type, design or materials.
Why is it important to protect the eyes from UV rays?
Although there are a lot of people who take various measures to protect their skin from UV rays, few people realize the need to protect the eyes from damage caused by UV rays. The results of investigations have demonstrated that continued long-term exposure of the eyes to UV-A and UV-B rays without some kind of protection can cause conditions such as cataracts or other eye diseases, while blue light present in visible light rays can lead to conditions such as age-related macular degeneration. Nowadays, many eye specialists recommend continuous protection of the eyes from UV rays. Like UV-cut clear lenses, the Transitions®(S) lens blocks out almost 100% of UV rays that can damage the eyes.
Can the Transitions®(S) lens be used for sunglasses?
The degree of darkness of the Transitions®(S) lens depends on factors such as the intensity of UV rays and temperature. The Transitions®(S) lens darkens to a degree more or less the same as sunglasses in intense sunlight (UV rays) when the temperature is low. However, during the summer months, for example, when UV rays are intense and the temperature is high, There is a tendency for the color to weaken. To protect the eyes from glare during the summer, it is recommended to use together with a separate pair of sunglasses. For further information, please check with your local opticians or ophthalmologist.
Is the Transitions®(S) lens suitable for driving?
The lens color takes time to return to its clear state in tunnels or dark parking lots, or at sunset, for example, and this can be extremely dangerous since it may result in temporarily degraded vision. Use of the lens should be avoided in such places or at such times. It should be noted that the front windscreen of many automobiles is furnished with UV-cut functions that results in almost no coloration of the Transitions®(S) lens. Please check with your local opticians or ophthalmologist for information on whether you need light-regulating lenses when driving.
Is Transitions®(S) lens also suitable for indoor work, such as when using a PC?
Yes, it is. In situations where ordinary clear-lens spectacles can be used, the Transitions®(S) lens can also be used in the same way. If you wish to have the effect of a reduction in blue light, we recommend a coating that comes with the function to cut blue light in either the optional “Super Resistance Coat BR” or “Super Clean Coat BR.”
※Please note that “Seiko SLU Transitions (S)” is handled only in stock and optional coatings cannot be selected.
How does the Transitions®(S) lens reduce glare?
When exposed to UV rays present in sunlight, the Transitions®(S) lens darkens and returns to a clear state when the UV-ray intensity decreases. This enables control of light permeation, thereby reducing glare.
Does the Transitions®(S) lens also improve vision?
Yes, it does. The Transitions®(S) lens enhances the ability to discern brightness and contrast, making is possible to see in any light.
What about the UV-ray cut performance?
Like UV-cut clear lenses, the Transitions®(S) lens block out almost 100% of UV rays that can damage the eyes.
Are there any special cautions that should be observed when using the Transitions®(S) lens?
Because they can be handled in the same way as ordinary lenses, there are no special cautions to be observed, they do however differ from sunglasses and special lenses, for example a Polarizing lens, and this means that it may not be possible to achieve the blocking performance required for applications for such lenses. In addition, because the lens will not instantaneously revert to its clear state when the wearer moves into the shade in cold weather, the wearer may experience temporarily degraded vision due to a lack of light and, as a result, it is not advisable to use the lens in situations where degraded vision may present risks.

Cautions

  • Use of photochromic lenses (lens color of which darkens when exposed to UV rays) in dark place such as tunnels is dangerous. The lens color takes time to return to its clear state in tunnels or dark parking lots, or at sunset, for example, and this can be extremely dangerous since it may result in degraded vision. Use of the lens should be avoided in such places or at such times.
  • Changes in density and color changes differ depending on conditions such as the temperature, weather and UV-ray intensity.
  • Due to the properties of photochromic lenses, the lens performance changes with time.
  • Orders for single lenses or with additional tints cannot be accepted.

Available Transitions®(S) lens products

Transitions® official site

"Super Clean Coat (SCC)" is the standard coating. “Super Resistance Coat” will become the standard for A-ZONE only.
"Super Resistant Coat BR", "Super Resistant Coat", "Super Durable Coat", "Super Clean Coat BR (SCC-BR)", "Super Clean Coat (SCC)" and "Fogless coat" may be selected as options instead of standard coating.
※Please note that “Seiko SLU Transitions (S)” is handled only in stock and optional
coatings cannot be selected.
Gray or brown may be selected as the product color.

SEIKO Individual Lens Superior P1 1.67 / 1.60
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SEIKO Individual Lens Pursuit NV 1.67 / 1.60
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SEIKO Individual Lens Pursuit NV Mild 1.67 / 1.60
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SEIKO near sight, far sight and astigmatism A-ZONE 1.67 / 1.60
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SEIKO near sight, far sight and astigmatism SSV AZ
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SEIKO near sight, far sight and astigmatism SLU AZ
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SEIKO near sight, far sight and astigmatism Super Sovereign UV
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SEIKO near sight, far sight and astigmatism Super Luscious UV
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