The hospital sector requires special consideration as inhabitants are either sick, chronically ill, or disabled in basic daily activities. They may be with or without visual problems, frailty, movement disorders, sleep disturbances or memory and cognitive problems. Light can play a very prominent role in improving the quality of life for these individuals. Encouraging more use of outdoor spaces has a major impact if used in association with suitable lighting indoors. The eye’s health (lens transmission, pupil size and reflex) can be measured and assessed. Accurate information is important for vision (glare, acuity) and non-image forming function (sleep-wake timing) and has to be taken into consideration for lighting solutions.

The temporal 24-hour light-dark exposure becomes very important for the repair and regeneration of cells, because cell cycles are dependent on strong signals from the body clock, whose activity is influenced by light quality, intensity and timing. Therefore, personalised dynamic light settings for each room in hospitals should be propagated. For example, dynamic light can include a dawn simulation, a spectrum of light that fluctuates with warmer colour temperature over the course of the day, and an absence of cool colour temperature in the evening. Furthermore, in a hospital, if possible, a patient should be allowed to adjust light levels in the room by shading daylight, dimming ceiling lighting from cool to warm colour temperature and having localised lights for reading or getting up at night.

Conclusion: Patients should be able to control the light settings in the room This will support the healing process and enhance quality of life for the patients.

Case Studies

New surgery Landeskrankenhaus Graz, Austria
Project by XAL

Photo: XAL
Central lighting control, complete dynamic course of daylight from dawn, bright day, evening mood up to the "blue hour". Four dynamic lighting sequences are selectable. The sequences can be customized.
Four in one, room light, examination light, reading light and night light are integrated into the luminaire in a form-fit manner.
Perfectly illuminated reading area with homogeneity Uo >0,7.
The patient’s visible area is illuminated extensively by lens technology. Ceiling illumination up to 2900lx.
Glare-free Led on the left and on the right side switchable as night light.
Examination light corresponds to the requirements of a treatment room. Average illumination >1000lx, CRI<95.

Seinäjoki Central Hospital, Seinäjoki, Finland
Project by Helvar

When extensive renovation work was undertaken at Seinäjoki Central Hospital (Finland), the focus for the refresh was to promote health and wellbeing. All routers are linked in the hospitals own IP network, which means that the system is easy to maintain, any changes and adjustments don’t require site visits.

Photo: Helvar
Thanks to dynamic lighting, the colour and brightness can be adjusted to suit the time of day. The night and day variations support the care work carried out by the staff and the recovery of the patients
Corridors have constant light control, motion detector and automatic dimming. The automation of the lighting ensures energy efficiency and an overall reduction of cost for lighting.
Did you know?

More light during the day for shorter stays:
A number of peer-reviewed, independent studies show that access to daylight leads to patients being discharged faster.
A significant relationship appears to exist between indoor daylight environments and a patient’s average length of stay. In 25% of cases studied, patients staying in bright rooms (such as those located on the southeast side of a hospital) were discharged 16-41% faster than those staying in rooms receiving less light.

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