Tomey AL-2000, Руководство оператора

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AL-2000 Biometer & Pachymeter
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7 7..3 3 U Uttiilliittyy S Se ettu up p ffo orr B Biio om me ettrryy & & IIO OL L C Ca allccu ulla attiio on n
7 7..3 3 U Uttiilliittyy S Se ettu up p ffo orr B Biio om me ettrryy a an nd d IIO OL L C Ca allccu ulla attiio on n
7 7..3 3..1 1 IIO OL L d da atta a e en nttrryy
The procedure for entering IOLs is as follows:
1. Touch the IIO
OL L D Da atta a E En nttrryy key (1) on the biome-
try Utility screen (fig. 1) to access the IOL data
entry window (fig. 2).
2. Select the memory number to be entered using
the up and down arrow keys (2) and the item to
be entered using the right and left arrow keys
(3). The location of the flashing cursor indicates
the category for the next data entry. If you do
not want to enter data in this category, move to
the desired category using the right and left
arrow keys. Continue pressing the arrow keys to
enter a0, a1 and a2.
3. Enter the IOL data using the alphabetic charac-
ter and number keys (4). Switch between the
alphabetic character keys and the number keys
by touching the S
Sw wiittcch ho ovve err key (5).
4. The following information may be entered:
• Company: Up to 10 letters or numbers
• Model No.: Up to 10 letters or numbers
• A-const.:
Acceptable range 100.00 - 130.00
• SF: Acceptable range -5.00 - +10.00
• ACDconst:: Acceptable range 0.00 - +10.00
• a0:
Acceptable range: -9.99 - +9.99
• a1, a2: Acceptable range: -0.99 - +0.99
The constants a0, a1 and a2 are used under
the following conditions:
2 < a0 + a1 x 3.37 + a2 x 23.39 < 7
2 < a0 + a1 x 2.53 + a2 x 20.00 < 7
2 < a0 + a1 x 3.50 + a2 x 27.00 < 7
In the event of an erroneous entry, press the
D
De elle ette e key (6).
5. Set entered data by touching the R Re ettu urrn n key (7).
6. When data entry is complete, touch the IIO OL L
D Da atta a E En nttrryy key (1) to return to the biometry
Utility screen.
Up to 10 lens models with associated constant values may be entered in the IOL
data list. These lens models may be selected and their pre-set values used for IOL
power calculation.
The appropriate lens constant for each IOL calculation formula is listed below:
• SRK II formula: A constant
• SRK/T formula: A constant
• Holladay formula: Surgeon’s factor (SF)
• Hoffer-Q formula: ACD constant
• Haigis standard formula: A constant
• Haigis optimized formula: a0, a1, a2