90
000000Ć1150Ć839 IOLMaster 11.02.2004
Photochemical radiation density of slit illumination (white LED) for aphakic eyes
L
A
= 125,5 W/(m
2
sr)
wavelength in nm
300
350
400
450
500
550
600
650
700
4
3,5
3
2,5
2
1,5
1
0,5
0
Note:
The spectrally assessed photochemical radiation densities
L
B
and
L
A
are a measure of the possibility
of photochemical damage of the retina through light.
L
B
represents the measure for the phakic eye,
L
A
represents the measure for the aphakic eye or for the eyes of very young children. Values of
L
B
and
L
A
above 800 W(m
2
sr)
Ć1
are regarded as high. The radiation dose of the retina for a
photochemical risk is calculated as the product of radiation density and exposure time. The
recommended radiation dose is based on calculations of the American Conference of Governmental
and Industrial Hygienists (ACGIH) Threshold Limit Values for Chemical Substances and Physical
Agents (Edition: 1995-1996).
The measured photometric values of the IOLMaster are far below the levels that are regarded as
high. Thus, the risk of damage through optical radiation is extremely low. Nevertheless, anterior
chamber depth measurement with the IOLMaster should be limited to the time absolutely necessary
for the diagnosis. The risk of damage may be higher, if fundus photography of the patient to be
examined has been taken within the last 24 hours.
Technical details and delivery package subject to change.
Technical Data
