16
5.8. Accessories
5.8.1. Eye Safety Filter
The eye safety lter protects the eyes of the user. The opti-
cal density of the lers is OD>5 which is a standard value
in this eld.
The shape and location of the lter depends on the slit
lamp model. In Haag-Streit BM the lter is located as
shown in image below.
In Haag-Streit BQ (left) and CSO 990 (right) the ring-
shaped lter is located between microscope and binocu-
lars.
5.8.2. Eye safety goggles
A pair of goggles (OD > 5 for 532nm) is delivered with each
Valon unit.
5. System Description
Warning!
Use of any oth-
er accessories
may result in
noncompliance
of standards
Warning!
Never use any
other eye safe-
ty lters with
the system
Caution!
Do not touch
the lter plates!
The plates
may become
scratched