Nidek Medical ARK-1S, Operator'S Manual

Page: 42 / 112

36
OPERATING PROCEDURE: Uncorrected Visual Acuity Measurement (UCVA)
3.4 Uncorrected Visual Acuity Measurement (UCVA)

Uncorrected visual acuity measurement can be performed after AR measurement.
1
Hold down the VA button for about a second to display the uncorrected visual
acuity measurement screen (VA TEST).
A VA chart (VA 0.1 to 1.25) is presented
to the patient.
2
Bring the patient’s eye into focus.
Bring the patient’s eye into focus in the same manner as AR/KM measurement.
When a single line VA chart is presented (The “98. UCVA CHART” parameter is set to “AUTO”.), go to
Step 5.
3
Ask the patient which is the smallest chart that they can identify.
Confirm how far down they can read.
4
Present a single line VA chart.
ᵏ
ࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ ࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ ࠉࠉ㹑㸩ࠉ㸮 ࠉ㸮㸬㸮㸮ࠉ 㸮㸮ࠉ㹑㸫ࠉ㸯 㹑㸫ࠉ㸯㸬㸰㸳 㸰㸳
ࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ ࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ ࠉࠉ㹁㸫ࠉ㸮 ࠉ㸮㸬㸮㸮 㸮㸮ࠉ㹁㸫ࠉ㸮 㹁㸫ࠉ㸮㸬㸵㸳 㸵㸳
ࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ㸿ࠉࠉ㸮ࠉࠉࠉࠉ㸿ࠉࠉࠉࠉࠉ㸰 ࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉࠉ㸿ࠉࠉ㸮ࠉࠉࠉࠉ㸿ࠉࠉࠉࠉࠉ㸰
9$
9$7(67
㻌 㻌 㻌 㻌 㻢 㻲 㻢 㻲
㻞 㻡 㻻 㻞 㻡 㻻 㻼 㻴
㻤 㻞 㼂 㻰 㻲
㻤 㻞 㼂 㻰 㻲
㻥 㻢 㻷 㻾 㻴
㻥 㻢 㻷 㻾 㻴
㻡 㻤 㻼 㻻 㻱
㻡 㻤 㻼 㻻 㻱
㻢 㻞 㻯 㻺 㻷
㻢 㻞 㻯 㻺 㻷
㻤 㻥 㻾 㻼 㻻
㻤 㻥 㻾 㻼 㻻
㻞 㻡 㻰 㻴 㼂
㻞 㻡 㻰 㻴 㼂
㻣 㻟 㻺 㼆
㻣 㻟 㻺 㼆
U
0.1
0.25
0.32
0.4
0.5
0.63
0.8
1.0
1.25
(
1 2 *
8 & (
- 4 *
2 1 '
% 0 -
4 2 1
& * 8
0 < 7
• The chart to be initially displayed in the uncorrected visual acuity measurement screen (VA TEST)
can be selected from “ALL: Full VA chart (VA 0.1 to 1.25)” or “AUTO: Single line VA chart for the VA
value predicted” by the “98. UCVA CHART” parameter. (The factory setting is “ALL”.)
Chart up
Uncorrected visual acuity measurement
starts from VA 1.25.
Chart down
Uncorrected visual acuity measurement
starts from VA 0.1.
0 < 7
(