70 Digital Refractor CDR-9000
culating from the measurement(s) data, it can estimate expected VA of pa
tient. So, it can present a VA chart and mask the expected line of the ch
art automatically. Unaided VA is estimated by the RK data and aided VA
by the difference between the RK and LM data. Default value is OFF.
4
Allow [-] Addition: specifies whether ‘-‘ additional power can be accepted
or not . YES or NO can be chosen. Default value is NO.
5
ADD Estimation: specifies whether the Addition Power will be estimated a
nd set automatically when the system enters near addition test. YES or N
O can be chosen. Default value is NO.
6
F ↔ N DATA Link: specifies how to reflect the ADD value between near a
nd far distance. Option SPH+ADD synchronizes the SPH power in NEAR
mode with the sum of SPH and ADD power in FAR mode. Option SPH al
ways synchronizes the SPH power in FAR mode and in NEAR mode. And
option OFF never synchronizes any power related to ADD. Default value is
OFF.
7
Working Distance: assigns Working Distance from 35 to 70 cm. This affect
s the amount of near convergence of the Digital Refractor. Default value i
s 40cm
8
PD Auto Set: assigns data source to be referred to for setting PD value.
RK, LM, or OFF can be chosen. Default value is RK.
It is recommended to select RK for PD state because it is easier to
measure PD using RK than using LM.
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