85
DEVICE SETTINGS AND MAINTENANCE: Device Parameter Settings
●
SUBJECT (Subjective measurement function)
Parameter option
Setting contents
91. SUBJECT START
(Corrected visual acuity
measurement screen
display)
AR(M) / AR(A) / RECALL(M) / RECALL(A)
Selects the screen display in which corrected visual acuity measurement is started.
AR(M)
: The distance corrected visual acuity measurement screen is displayed
with button operation.
AR(A)
: After AR measurement of both eyes, the distance corrected visual acuity
measurement screen is automatically displayed.
RECALL(M)
: The recall screen for distance vision is displayed with button opera-
tion.
RECALL(A)
: After AR measurement of both eyes, the recall screen for distance
vision is automatically displayed.
92. SUBJECT CHART
(Corrected visual acuity
measurement chart)
ALL / 0.1 / 0.25 / 0.32 / 0.4 / 0.5 / 0.63 / 0.8 / 1.0 / 1.25
ALL / 200 / 80 / 60 / 50 / 40 / 30 / 25 / 20 / 16
VA value of chart to be initially displayed for corrected visual acuity measurement of
the new patient’s eye
93. NEAR CHART
(Near visual acuity chart)
ALL / 0.1 / 0.25 / 0.32 / 0.4 / 0.5 / 0.63 / 0.8 / 1.0 / 1.25
ALL / 200 / 80 / 60 / 50 / 40 / 30 / 25 / 20 / 16
VA value of chart to be initially displayed for near visual acuity measurement of the
new patient’s eye
94. VA DISPLAY
(VA display unit)
DEC. / FRAC.
Selects the display unit of visual acuity from “DEC.” (decimal display) or “FRAC.”
(fraction display). For the fraction display, numerator 20 is omitted and only the
denominator is displayed.
95. L. DATA SELECT
(Corrective lens data)
YES / NO
When “YES” is selected, large area measured values are used for the corrective
lens to be used in corrected visual acuity measurement.
When large area measured values are not obtained, AR-measured values are
used.
96. NEAR RECALL
(Vision comparison func-
tion in near visual acuity
measurement mode)
YES / NO
Sets whether to use the vision comparison function during corrected near visual
acuity measurement.
97. WD CHANGE
(Change of near work-
ing distance)
YES / NO
Sets whether to enable button operation to change WD during corrected near visual
acuity measurement.
When “YES” is selected, the near icon changes from
to
indicating
that WD is changeable. In addition, the WD value measured at the printed near
addition power and near VA value is printed. However, if the default setting (set by
the “56. WORKING D.” parameter) has not been changed, it is not printed out.
98. UCVA CHART
(Uncorrected visual acu-
ity measurement chart)
ALL / AUTO
Chart to be initially displayed in the uncorrected visual acuity measurement screen
ALL
: A full VA chart (VA 0.1 to 1.25) is presented.
AUTO
: A single line VA chart predicted from SPH and CYL values of AR mea-
surement is presented.
Summary of Contents for ARK-1S
Page 1: ...AUTO REF KERATOMETER AUTO REF KERATOMETER ARK 1s ARK 1s OPERATOR S MANUAL OPERATOR S MANUAL ...
Page 6: ...IV ...
Page 76: ...70 OPERATING PROCEDURE Operation when Peripheral Devices are Connected ...
Page 112: ...106 SPECIFICATIONS AND TECHNICAL INFORMATION EMC Electromagnetic Compatibility ...