iii-3
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3.9.1 General ................................................................................................................................. 3-74
3.9.2 Measurement ........................................................................................................................ 3-76
3.9.3 Application ............................................................................................................................ 3-81
3.9.4 Connecting & Printing ........................................................................................................... 3-83
4. TECHNICAL INFORMATION ............................................................................................... 4-1
4.1 IOL power calculation formula ....................................................................................................... 4-1
4.1.1 Haigis optimized / Haigis Standard ........................................................................................ 4-1
4.1.2 Hoffer
®
Q formula ................................................................................................................... 4-3
4.1.3 Holladay 1 ............................................................................................................................... 4-5
4.1.4 SRK-II formula ........................................................................................................................ 4-7
4.1.5 SRK/T formula ........................................................................................................................ 4-9
4.1.6 SRK SHOWA formula ........................................................................................................... 4-11
4.1.7 Shammas-PL formula ........................................................................................................... 4-12
4.1.8 SRK/T Double K ................................................................................................................... 4-14
4.2 How to calculate axial length using the biometry function .......................................................... 4-16
4.2.1 Phakic eye ............................................................................................................................ 4-16
4.2.2 Dense cataract eye ............................................................................................................... 4-16
4.2.3 Aphakic eye .......................................................................................................................... 4-16
4.2.4 IOL eye ................................................................................................................................. 4-16
4.3 Amplifier characteristics of the A-scan diagnosis ........................................................................ 4-18
4.4 Ultrasonic wave output ................................................................................................................ 4-18
5. INSPECTION AND MAINTENANCE .................................................................................... 5-1
5.1 Warranty ........................................................................................................................................ 5-1
5.2 Operation life ................................................................................................................................. 5-2
5.3 Inspection ...................................................................................................................................... 5-2
5.4 Routine maintenance ..................................................................................................................... 5-2
5.4.1 Maintenance of measurement probes .................................................................................... 5-2
5.4.2 Cleaning and Disinfection of measurement probes (for Europe) ........................................... 5-4
5.4.3 Maintenance of main unit ....................................................................................................... 5-6
5.5 Replacing consumables ................................................................................................................ 5-7
5.5.1 Fuses ...................................................................................................................................... 5-7
5.5.2 Printer paper ........................................................................................................................... 5-7
5.6 Storing ............................................................................................................................................ 5-8
5.7 Disposal ......................................................................................................................................... 5-8
6. TROUBLESHOOTING ......................................................................................................... 6-1
6.1 Common items ............................................................................................................................... 6-1
6.2 B mode image diagnosis ............................................................................................................... 6-3
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