Safety Measures
OPMI LUMERA® 700
Version 7.3
Page 18
G-30-1673-en
Measures to prevent phototoxic injury
Several papers
1)-5)
dealing with the problem of phototoxicity in ophthalmic
surgery have been published. A comprehensive review of these publications
reveals five aspects of particular concern:
– Illumination characteristics (spectral composition)
– Illumination intensity
– Angle of illumination
– Focus of the light source
– Exposure time to light
In the following, comments on these aspects are given and a description of
how Carl Zeiss, as a manufacturer, makes allowance for them in its systems.
Illumination characteristics (spectral composition)
Studies on the exposure of the eye to light of varying spectral composition
date back to the early 1950s. These studies suggest that the potential hazard
of phototoxic injury to the patient's retina can be reduced by blocking out the
blue and ultraviolet light below a wavelength of 475 nm.
Integrated protection filters
For protection of the retina, Carl Zeiss offers the swing-in retina protection
filter (blue barrier filter) and the stationary UV blocking filter as standard fea-
tures of the surgical microscope. This reduces not only the exposure of the pa-
tient's eye to light, but also that of the surgeon's.
An important point to note here, however, is that the orange color of the
retina protection filter will inevitably change the perceived color of the light.
For this reason, the surgeon may initially have to get used to the changed ap-
pearance of the anatomical structures.
Illumination intensity
The majority of researchers suggest that the surgeon should use the lowest
light intensity required at the patient's eye to guarantee good viewing during
Summary of Contents for opmi lumera 700
Page 1: ...Carl Zeiss OPMI LUMERA 700 User manual G 30 1673 en Version 7 3 2012 05 02...
Page 4: ...OPMILUMERA 700 Version 7 3 Page 4 G 30 1673 en...
Page 46: ...Safety Measures OPMI LUMERA 700 Version 7 3 Page 46 G 30 1673 en...
Page 61: ...Version 7 3 G 30 1673 en Page 61 OPMI LUMERA 700 System Overview Fig 23 Overhead display 11...
Page 106: ...System Overview OPMI LUMERA 700 Version 7 3 Page 106 G 30 1673 en...
Page 109: ...Version 7 3 G 30 1673 en Page 109 OPMI LUMERA 700 Preparations for use...
Page 113: ...Version 7 3 G 30 1673 en Page 113 OPMI LUMERA 700 Preparations for use Fig 48 OR scene 1 2...
