 |
| Test card: Open circles on a red background |
|
|  | What are the real benefi ts of adjustable colour temperature? and how
compatible is the iLED with an air-handling ceiling? Here are the answers:
Since its debut at the 2005 Medica trade
show, the fi rst LED lamp has found new
users worldwide and was also awarded
two prizes in the USA at the “Health
care Facilities Symposium & Expo”,
which recognizes extraordinary innovations in the health industry. However it was even more important for their inventors to scientifi cally prove
the quality of the iLED. So TRUMPF
commissioned a study as to what
degree adjustable colour temperature
infl uences our visual performance
and whether the iLED also suffi ciently
meets the hygiene requirements of
the OR.
Light colours for more vision |
Currently, the iLED is the only operating
light that can have its colour temperature
adjusted to any OR situation
– from warm red 3,500 Kelvin to cool
blue at 5,000 Kelvin. An independent
lighting institute conducted a study
in which 30 test subjects had to identify
standardised vision test characters
on a colour background under both the
iLED 5 and gas-discharge lamps. Th e
results: Under the iLED, the characters
were considerably clearer with weak
colour contrasts. In most cases, the test
subjects had the best vision at 4,000
to 4,500 Kelvin and with a blue back ground at 3,500 Kelvin. In addition,
they preferred the iLED even when
the colour temperatures of both lamps
were the same (4,000 Kelvin) – because
the iLED’s light was more evenly distributed.
For surgeons, this means that
the iLED helps them to better distinguish
between healthy tissue and diseased
tissue that is slightly off colour.
For a red wound location, the surgeon’s
eyes are relieved by a high colour temperature,
for a blue wound location, a
low colour temperature.
Hygienic or not?
Professor Seipp from the Centre for
Hygiene and Technical Public Health
tested how well the iLED met the hygiene
regulations in the OR under reallife
conditions and in strict compliance
with EU directives. His fi ndings: Th e
iLED 3 is one of the best lamps that is
compatible with an air-handling ceiling
that he has ever tested. Th is is because
it generates very little turbulence that would disturb the irrotational, laminar
fl ows in the OR and thereby impair
the room’s cleanliness. Th is means that
the light is also well-suited for sensitive
medical disciplines such as orthopaedics
and bone surgery in which absolute
sterility is top priority. Th e iLED’s
excellent ratings come from an open,
compact form, low laminar fl ow surface
and minimal temperatures on the
lamp body. |