Eye health & visual comfort in old age

EYE HEALTH & VISUAL COMFORT

No other tissue in the body requires as much energy as your retina, and light is the foundation of our vision.

From about age 40, the powerhouses in your retina measurably slow down.*

* The decline of mitochondrial function in the aging retina is the starting point for research at the UCL Institute of Ophthalmology. Source: Shinhmar et al. (2020), The Journals of Gerontology: Series A 75(9), e49–e52.

What changes through light

01 · Mitochondrial Regeneration

No other tissue in the body works as intensively as your retina. That's why it contains a particularly high number of mitochondria — the powerhouses of the cells.
As you age, the performance of your mitochondria decreases. This is precisely where research into deep red light comes in: 670 nanometers, a few minutes in the morning.

→ A habit that takes less time than brushing your teeth.

02 · Add light that is missing indoors

Sunlight contains a lot of red and infrared light. Window glass, however, lets very little through, and conventional light sources have a pronounced blue component. These cannot replace sunlight. Therefore, those who spend most of their time indoors are exposed to light that is not suitable for the human eye and which differs significantly from natural daylight.

→ You supplement what modern rooms filter out.

03 · Evening light for better sleep

Point the Gen30 at a wall or the ceiling in the evening. This creates a soft, red light in the room that won't glare – for example, next to the TV or by your reading chair.
Red light influences the internal clock less than normal room light, so it hardly disturbs sleep. Rather, red light helps prepare the body for the upcoming rest phase.

→ One device, two times of day.

Improved color contrast perception after 3 minutes*

How it works

Why the eyes of all things

Your retina is constantly converting light into nerve signals. The energy required for this comes from the mitochondria. As you age, they work more slowly. This process occurs throughout the body. In the retina, however, it becomes apparent earlier because a particularly large amount of energy is needed there.

What red light is doing there

Mitochondria contain an enzyme involved in cell energy production. It absorbs red light, particularly well in the range of approximately 670 nanometers.
Why in the morning? Because our cells follow a circadian rhythm. Studies showed an improvement in color contrast vision in subjects aged 40 and over after just a single morning application; this effect lasted for up to a week.

What Studies Show

A research group at the UCL Institute of Ophthalmology in London has been investigating the effects of deep red light on eye health for years. The results indicate that short applications in the morning can improve the perception of color contrasts. This effect was not observed with afternoon application. The studies included only a small number of participants and were limited to people without eye diseases.

Altered perception of color contrasts in people over 40 after 3 minutes in the morning (UCL London, single application)
Altered visual function measurements in older adults (UCL London, over two weeks) Effect only with morning, not with afternoon application (UCL London, same experimental setup)
Higher cytochrome c oxidase activity after 670 nm (animal model)

Sources
Shinhmar, H., Grewal, M., Sivaprasad, S., Hogg, C., Chong, V., Neveu, M., & Jeffery, G. (2020). Optically improved mitochondrial function redeems aged human visual decline. The Journals of Gerontology: Series A, 75(9), e49–e52.

Shinhmar, H., Hogg, C., Neveu, M., & Jeffery, G. (2021). Weeklong improved colour contrasts sensitivity after single 670 nm exposures associated with enhanced mitochondrial function. Scientific Reports, 11, 22872.

Begum, R., Powner, M. B., Hudson, N., Hogg, C., & Jeffery, G. (2013). Treatment with 670 nm light up-regulates cytochrome c oxidase expression and reduces inflammation in an age-related macular degeneration model. PLoS ONE, 8(2), e57828. (Animal model.)

Karu, T. I. (2010). Multiple roles of cytochrome c oxidase in mammalian cells under action of red and IR-A radiation. IUBMB Life, 62(8), 607–610.

Wong-Riley, M. T. T., Liang, H. L., Eells, J. T., Chance, B., Henry, M. M., Buchmann, E., Kane, M., & Whelan, H. T. (2005). Photobiomodulation directly benefits primary neurons functionally inactivated by toxins: role of cytochrome c oxidase. Journal of Biological Chemistry, 280(6), 4761–4771.

Which heilys® suits you?

£159.00

The Vision Mode specifically uses 670 nanometers—exactly the wavelength at the center of research. In the evening, it can also be used as ambient light.

To the product

£299.00

For everyone who works or reads a lot on screens. It continuously emits red light into the room, can relieve eye strain, and disrupts the sleep-wake cycle less than conventional white light.

To the product

£669.00

Beyond what your eyes can see: six wavelengths for skin, muscles, joints, and regeneration.

To the product

Clear view of the light

Remove your glasses or contact lenses. Anything between your eyes and the light can block light. Besides, you often sit more relaxed without glasses or contact lenses.

Regarding Gen30

Three minutes, that's all.

Place the Gen30 in Vision Mode about 50 cm in front of you. Look relaxed towards the light for 3 minutes, but do not stare directly into the LEDs. It is best to use the device in the first half of the day, for example, shortly after breakfast.

Regarding Gen30

Light on the wall

Simply direct the Gen30 indirectly against a wall, the ceiling, or the floor. This creates a soft, glare-free light that doesn't reflect and provides pleasant background lighting for reading or watching TV.

Regarding Gen30

REAL CUSTOMERS. HONEST OPINIONS.

What you're reading here are real experiences from customers using the Gen series.

Customer Reviews

Overall rating: 4.6 / 5 from 631 reviews.

Customer photo review of heilys® Gen30+Vision

Ich mag meine Helys Lampe sehr und nutze sie oft. Habe das auch schon meiner Familie empfohlen. Sollte sich jeder gönnen 🥳

Ulrike U. 5/5 Verified August 17, 2026

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Improved color contrast perception after 3 minutes*

Which heilys® suits you?

Your heilys® Eye Care Routine

Clear view of the light

Three minutes, that's all.

Light on the wall

Customer Reviews

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