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Version 7.3
G-30-1673-en
Page 21
OPMI LUMERA® 700
Safety Measures
such as the phaco handpiece, and movement of the eye provide interruption
of the exposure and would be expected to significantly lengthen the time be-
fore photoretinitis might be expected to occur.
Effects of
microscope illumination
A prospective study
7)
of the effects of microscope illumination during surgery
did not reveal any phototoxic retinal injuries for procedure times of up to 30
minutes if the calculated maximum recommended exposure time was 150
seconds. However, it was also found that at the same brightness setting, pho-
totoxic retinal injury could be expected after approximately 100 min.
Stereo Coaxial Illumination
The Stereo Coaxial Illumination (SCI) of this system has been designed to pro-
vide a bright red reflex using only very small quantities of light in the center
of the surgical field. The peripheral illumination causes higher exposure of the
retina, but usually not directly on the macula, depending on the position of
the eye. For cataract procedures, we recommend adjusting the surrounding
field illumination to be somewhat darker than the central red reflex spot. This
not only minimizes the phototoxic risk, but it also reduces the diffuse light that
is reflected by the patient's sclera.
Other recommendations for minimizing the phototoxic risk include:
• Always use the lowest brightness setting possible.
• Use the retina protective filter (blue barrier filter) to block the blue spec-
• When working on the exterior eye, use the retinal protection device to
prevent light from entering the pupil, especially when the pupil is dilated
(see page 191).
• Always switch off the microscope illumination during pauses in surgery.
Either move the surgical microscope to the standby position for this pur-
pose, or cover the patient's eyes, or switch off the illumination system via
the foot control panel.
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...