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Installation, Features, & Functions
ACUITY NOTATION
Using the LEFT/RIGHT arrows on your remote, select SNELLEN, METRIC, or DECIMAL for your
acuity notation. When you are finished, press the DOWN arrow.
•
Snellen - displayed as distance in feet / size in mm
•
Metric - displayed as distance in meters / size in mm
•
Decimal - displayed as the decimal equivalent for the distance in feet / size in mm
The 20/10 optotypes may not be available at test distances under 12 feet (3.66 meters) and the 20/400
optotypes may not be available at test distance over 22 feet (6.71 meters).
DISTANCE
Use the MAX and MIN buttons to adjust the testing distance from the patient's eye to the screen. The
units are either inches or centimeters depending on whether you chose ENGLISH or METRIC earlier in
the setup procedure. When you are finished, press the DOWN arrow.
Note: If MIRRORED was selected in the ROOM setup category entered above, then two distances will
be required. First enter the distance from the patient to the mirror, then enter the distance from
the mirror to the screen. Press the DOWN arrow after each distance is entered.
OPTOTYPES
Using the LEFT/RIGHT arrows on your remote, select the default optotype you would like the
ClearChart 4 to display when first started. Available optotypes are:
• 17 Letter
• 8 Letter
• ETDRS
• Sloan
• Tumbling E
Note: Numbers, Kolt, and Children's Shapes are only available with the ClearChart 4.
Note: ETDRS, LEA SYMBOLS, and LEA NUMBERS are only available with the ClearChart 4X.
Note: You will be able to access any optotype while using the ClearChart 4. When you are finished,
press the DOWN arrow.
ALTERNATE OPTOTYPES
Using the LEFT/RIGHT arrows on your remote, select the alternate optotype you would like the
ClearChart 4 to display when you press ALT OPT on your remote. When you are finished, press the
DOWN arrow.
LINE PRESENTATION
Using the LEFT/RIGHT arrows on your remote, select the default line presentation you would like the
ClearChart 4 to display. Presentation types:
•
Triple Decreasing
•
Quadruple/Same
•
Quadruple/Decreasing
•
Single Letter
Note: You will be able to access any line presentation while using the ClearChart 4. When you are
finished, press the DOWN arrow.
13795-101 Rev. J
• Landolt C
• O Landolt C
• HOTV
• Allen Symbols
• Numbers
•
Column
•
Column Uneven
•
Single Line
•
Double Same
• Kolt
• Children's Shapes
• LEA SYMBOLS
®
• LEA NUMBERS
®
•
Double Decreasing
• Triple Same
(continued)
21
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