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Instruction Manual Mesotest II
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Figure 3 - Test panel
The glare light source is situated at the left,
next to the test panel, at a visual angle of 3°
(cf. Figure 3). It is activated automatically in
accordance with test selection.
The glare light source simulates glare
created by an oncoming vehicle with its
headlights on dipped beam. The glare
intensity is 0.35 lux at the pupils.
The light sources are two white LED´s, one
for the surrounding and one for glare.
A stand-by function switches the illumination
off whenever there has been no operating
input for a certain period of time.
A projection device above the test panel
assists in fixation. It can be used to project
two red dots onto the test panel (cf. Figure
3).
This fixation assistance is turned off
automatically when the next test or
optotypes appear.
The Mesotest II is available with 3 sets of
minus lenses as an option. These make it
possible to determine the presence of night
myopia and thus to compensate for this form
of myopia, i.e. to improve nocturnal vision as
far as possible.
An integral part of this option is the
possibility of monocular examinations.
Surrounding
FixationAssistance
FixationAssistance
GlareLight
Landolt Ring
