DAYTIME PHOTOTHERAPY
FOR
CRIGLER
NAJJAR SYNDROME (CNS)
|
SAFETY
Because the sit up lights provide more
intensive phototherapy than other systems some people may be concerned
as to safety aspects. These may be considered as follows:
- The total energy delivered is only about
15% of the total visible light energy anyone receives on a sunny
day in Sydney, Australia. The energy of blue light delivered
is comparable with the blue light energy received by a person
on a sunny day in Sydney. There is a very long history of people
receiving visible sunlight on their skin without problems.
- A genuine area of concern about sunlight
is the amount of ultra violet energy that may be associated.
Ultra violet energy can cause skin problems. With TL 52 tubes
the light spectrum has virtually no energy in the UV wavelengths.
The Melbourne Royal Children's Hospital had radiation analysis
undertaken by The Australian Radiation Protection and Nuclear
Safety Agency. It was reported that "the level of UVR emitted
from the lamps does not exceed the exposure limits for UVR as
stated in the standard as issued by the International Radiation
Protection Association." This demonstrated to the Royal
Children's Hospital that UV exposure was not a cause for concern
when using these lamps in the unit.
- In the past there has been speculation
that blue light can damage the eyes. It is true that a very intensive
point source of blue light can, in some circumstances, damage
the retina of the eye. This is reported in the area of industrial
medicine and relates to very intense point sources of light such
as those seen in welding. Fluorescent tubes are not point sources
of light and the energy levels are far below the levels of concern.
In any case, the eyes are much less exposed to blue light in
these sit-up lights than they are with most night phototherapy
systems.
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