Quick Reference Guide
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DGH 5100 QUICK REFERENCE GUIDE Using the DGH 5100 as an A-Scan POWERING UP THE UNIT 1. 2.
Attach the A-Scan probe to the unit. Turn on power and wait for the main menu to appear. The main menu page also displays the “Current Instrument Status”.
OBTAINING A-SCAN MEASUREMENTS 1. 2.
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Press ASCAN (F2) to activate the A-Scan mode. If the “eye” and “lens type” need to be changed, press SELECT EYE (F1). 2.1. Use the SELECT and cursor keys to make the appropriate selection. 2.2. When completed, press OK (F2). Obtain A-Scan measurements (refer to pages 30 thru 37 of the Operating Instructions). 3.1. Up to 8 measurements can be stored for each eye. 3.2. Review measurements by using the and cursor keys. 3.3. Delete unwanted measurements by pressing DELETE. 3.4. Press PRINT to obtain a hard copy of A-Scan measurements and statistics or proceed to the IOL calculator. (To customize the A-Scan printout refer to pages 23 to 26 of the Operating Instructions.) When completed, press MAIN MENU (F4).
OBTAINING IOL CALCULATIONS 1. 2.
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Press IOL (F3) to access the IOL calculator. Enter an IOL configuration 2.1. Press OPTIONS (F3) and use the cursor key to highlight Setup. 2.2. Press SELECT to access the “SBH IOL Calculator Configurations” page. 2.3. Use the cursor, SELECT, and numeric keys to input data for at least one IOL configuration. (Refer to page 47 of the Operating Instructions for corresponding values for the A-Constant, ACD, and Surgeon Factor.) 2.4. When completed, press OK (F2). Press ENTER DATA (F1) and then use the cursor, SELECT, or numeric keys to input data required for IOL calculations. Press COMPUTE IOLS (F2) and observe the target IOL power that predicts the desired postoperative refraction. If desired, use the and cursor keys to review the ten IOL powers (in half diopter increments) above and below the selected IOL power. Press PRINT to obtain a complete printout of IOL calculations and associated data. (To customize the printout of the IOL calculator, refer to pages 52 to 55 of the Operating Instructions.) When completed, press MAIN MENU (F4).
PREPARING THE UNIT FOR THE NEXT PATIENT 1. 2.
Make sure that the main menu is activated (“Current Instrument Status” is displayed). Press CLEAR, use the cursor key to highlight Clear All, and then press SELECT.
CALIBRATION VERIFICATION 1. 2. 3. 4. 5. 6. 7. 8. 9.
Power up the unit as explained above. Press ASCAN (F2) to activate the A-Scan mode. Press OPTIONS (F3), use the cursor key to highlight Test Mode, and then press Select. Answer “Yes” to the on-screen prompt by pressing SELECT. Apply a small drop of water to the reference block. Applanate the probe tip to the center of the reference block. Observe measurements of 24.10 ± 0.25mm. If measurements are outside of the above tolerance, refer to steps 7 and 8 on page 39 of the Operating Instructions. Exit the test mode by repeating steps 3 and 4. CAUTION: The operator MUST always exit the test mode before attempting to take measurements on the eye.