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STATPAC ANALYSIS & PRINTING RESULTS
REV. B 02/03 PN 51680-1
HUMPHREY FIELD ANALYZER
II -
i
series
GRAYSCALE
SYMBOLS
The grayscale representation of the patient’s visual field provides an immediate idea of the size
and depth of any field defects present. Each variation of the pattern corresponds to a 5 dB
change in sensitivity. The comparative scale below (Table 7.4)
shows the ten (10) grayscale
patterns and relates them to decibels and apostilbs. An explanation of the relationship between
these units of measurement along with conversion tables can be found in the Appendix.
Note: Blue-Yellow printouts use the same relationship between grayscale symbol and
decibel values as White-on-White testing. The grayscale will look significantly darker with
Blue-Yellow testing in most cases. This is because Blue-Yellow testing normally generates
lower threshold values than does White-on-White testing. Note that the maximum (0 dB)
stimulus in Blue-Yellow testing is 6 foot-lamberts, not 10,000 apostilbs.
Table 7.4: The Grayscale Shades Found on HFA II Printouts and Their Numerical
Equivalents in Apostilbs (ASB) and Decibels (dB).
REMOTE PRINTER
ACCESS
It is possible to link the HFA II to a compatible printer without using cables. The same printer
can be shared with other devices or computers in your office. One system, known as GoPrint
™
,
allows HFA II owners to communicate to any HFA II-compatible printer within a certain
distance, regardless of whether or not the instrument and the printer are in the same room.
One “Computer-GoPrint” device is connected to the HFA II, while a second “Printer-GoPrint”
device is connected to your printer. GoPrint is produced by the AeroComm company. Check
your computer or electronics store for details and availability of a GoPrint system or go to the
AeroComm website at www.aerocomm.com.
Perform the following steps to set up a GoPrint system:
1.
Insert the connector cable of the Computer-GoPrint into the printer port on the back of
the HFA II.
2
. Insert the connector cable of the Printer-GoPrint into the printer port of your printer.
3.
Plug in both GoPrint power supplies.
4.
Turn on both the HFA II and the printer.
5.
On the HFA II System Setup screen, make sure that “LASERJET” is identified as the Printer.
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Summary of Contents for HUMPHREY 720i
Page 1: ...HUMPHREY FIELD ANALYZER II i series USER S GUIDE Model 720i Model 740i Model 745i Model 750i...
Page 4: ......
Page 26: ...1 18 INTRODUCTION INSTRUMENT SETUP REV B 02 03 PN 51680 1 HUMPHREY FIELD ANALYZER II i series...
Page 116: ...6 8 TEST RELIABILITY REV B 02 03 PN 51680 1 HUMPHREY FIELD ANALYZER II i series...
Page 208: ...10 20 CUSTOM TESTING REV B 02 03 PN 51680 1 HUMPHREY FIELD ANALYZER II i series...
Page 284: ...12 14 CARE AND CLEANING REV B 02 03 PN 51680 1 HUMPHREY FIELD ANALYZER II i series...
Page 327: ......
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