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. Iridectomy contact glass CGIL
The CGIL iridectomy contact glass was designed by
Riquin, Fankhauser et al. to perform full thickness
peripheral laser iridectomies. The use of this con-
tact glass increases safety and efficacy of the laser
procedure. It increases the energy density on the iris
while minimizing it on anterior and posterior structu-
res, such as cornea and lens capsule. The magnifying
effect allows for improved aiming accuracy and high-
er success rate. Perfect handling is facilitated by the
large diameter. It is made of laser resistant glass and
is antireflection coated
1)
Optical Properties
The CGIL contact glass increases the cone angle of
the laser beam and therefore it increases the beam
diameter on out-of-focus structures, while decreases
the focal spot. The effective focal spot reduction is
achieved by minimizing spherical aberrations and
coma through the application of the Young-Weiers-
trass theorem: The lens has been designed with the
aplanatic point of the entrance surface located on the
iris, at three millimeters posterior to the cornea.
Dioptric power in air
Cone angle magnification
Antireflection coating for visual observation and laser
1)
treatment:
450 - 650 nm and 1064 nm
.
+ 5 D
1.6x
1500.7200475.04060
Verre de contact CGIL
Optische Konfiguration des
CGIL-Iridektomie-Kontakt-
glases.
Configuration optique du
verre à iridectomie CGIL.
Optical configuration of
the CGIL iridectomy con-
tact glass.
Arbeitsbereich
Zone de travail
Working area
© Haag-Streit AG, CH-3098 Koeniz, Switzerland
CGIL
AR/Diode/YAG
1)
YAG532
12 mm
• Iris
Kontaktglas CGIL
Contact glass CGIL
7
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