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OPTIKON KERATRON ONDA Installation And Operating Manual

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Code 161401EN
2010-06-07 Rev.0
®
KERATRON
ONDA
Videokeratoscope Aberrometer
INSTALLATION AND OPERATING MANUAL
OPTIKON 2000 S.p.A.
Via del Casale di Settebagni, 13 - 00138 Rome, Italy
Phone +39 06 8888355 - Fax +39 06 8888440
e-mail
sales@optikon.com
-
www.optikon.com

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  • Page 1 Code 161401EN 2010-06-07 Rev.0 ® KERATRON ONDA Videokeratoscope Aberrometer INSTALLATION AND OPERATING MANUAL OPTIKON 2000 S.p.A. Via del Casale di Settebagni, 13 - 00138 Rome, Italy Phone +39 06 8888355 - Fax +39 06 8888440 e-mail sales@optikon.com www.optikon.com...
  • Page 2 Optikon 2000 SpA is an ISO 9001 and ISO 13485 certified company which manufactures surgical and diagnostic devices for ophthalmology. Its products are manufactured to satisfy the requirements of 93/42/EEC Medical Devices Directive.

  • Page 3: Table Of Contents

    ELECTRICAL WARNINGS............3-3 MECHANICAL WARNINGS............3-4 SYMBOLS ..............4-1 GENERAL INFORMATION ..........5-1 SYSTEM DESCRIPTION ..............5-1 5.1.1 TOPO-ABERROMETRY WITH THE KERATRON ONDA ......5-2 5.1.2 THE BIVALENT CONE AND TOPOGRAPHY ........5-4 5.1.3 ABERROMETRY..............5-4 5.1.4 MAIN FEATURES ..............5-6 TECHNICAL SPECIFICATIONS ............5-7 ELECTROMAGNETIC COMPATIBILITY TABLES ........5-9 5.3.1 ELECTROMAGNETIC EMISSIONS ..........5-9...
  • Page 4 TROUBLESHOOTING GUIDE ..........8-1 TROUBLESHOOTING ..............8-1 KERATRON® SCOUT SOFTWARE ON THE EXTERNAL PC ... 9-1 INTRODUCTION..............9-1 DOWNLOAD THE KERATRON SCOUT FROM THE WEB ......9-1 ® KERATRON SCOUT SOFTWARE INSTALLATION.........9-2 CONFIGURATION OF THE ETHERNET CONNECTION......9-3 INSTALLATION OF THE WI-FI CONNECTION ........9-7 ®...

  • Page 5: Disclaimer

    Use of this system is a matter of professional medical judgment in all cases. Optikon 2000 S.p.A. is not responsible for any clinical problem resulting from mishandling this equipment and makes no medical recommendations.
  • Page 6 ® Keratron Onda Installation and operating manual OPTIKON 2000 THIS PAGE IS INTENTIONALLY BLANK 2010-06-07 Rev.0 Code 161401EN...

  • Page 7: Limited Warranty Conditions

    OPTIKON S.p.A. technical service. OPTIKON 2000 S.p.A. reserves the right to verify, in case of failures, if the instrument and/or its accessories have been modified or tampered with in any way, or if they have been damaged by improper use.
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  • Page 9: Warnings

    Increase the distance between the instruments themselves. Connect the unit to a power outlet that is different from the one to which the other instruments are connected. Consult the distributor or authorized Optikon 2000 S.p.A. Technical Service Department. ® • The Keratron Onda has been developed and optimised to measure human ®...

  • Page 10: Environmental Warnings

    Keratron Onda Installation and operating manual OPTIKON 2000 disappearance of some mire) cannot insure to have the same degree of accuracy and thus it is strongly discouraged. • When used as a corneal topograph, situations that create mires jamming can occur in human eyes in limited areas.

  • Page 11: Electrical Warnings

    ® Keratron Onda Installation and operating manual OPTIKON 2000 The device contains a lithium battery. The used batteries must be disposed of in an adequate manner. ® • Do not dispose of Keratron Onda as unsorted municipal waste. Collect it separately according to the local laws/regulations on disposal of waste electrical and electronic equipment.

  • Page 12: Mechanical Warnings

    • Be careful not to hit the patient with the cone, during measurements, when ® moving the Keratron Onda forward. • Do not touch any of the optical surfaces. Cleaning or maintenance is to be performed by personnel authorized by Optikon 2000 S.p.A. 2010-06-07 Rev.0 Code 161401EN...

  • Page 13: Symbols

    ® Keratron Onda Installation and operating manual OPTIKON 2000 SYMBOLS The table below shows some I.E.C. approved symbols and their meanings. In the absence of sufficient space, these symbols are often used on medical instruments to enable quick and simple communication of information and warnings. At times two or more symbols are combined together in order to obtain special meanings.
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  • Page 15: General Information

    (axial powers, curvatures, and corneal aberrometry) and to provide information on the optical aberrations of the ocular or total wave front. The main identifiable elements in the Keratron Onda are shown in Figure 5-1: Keratron® Onda They are: 1.

  • Page 16: Topo-Aberrometry With The Keratron Onda

    For this reason topo-aberrometers generally sacrifice the coverage of the central zone. To solve this problem, the Keratron Onda adopts a patented system of “back-mires” located behind the filter mirror that separates the two optical paths (refer to Figure Figure 5-2: Operating principle of the back-mire).
  • Page 17 Keratrons (28, at a uniform rate for the arc-step algorithm) without any compromise in the center (Figure 5-2, in the lower left-hand corner). To establish when the eye is at the ideal distance from the cone, the Keratron Onda uses an advanced version of the EPCS (Eye Position Control System) electronic circuit adopted in the other topographs produced by Optikon 2000 S.p.A.

  • Page 18: The Bivalent Cone And Topography

    5.1.2 THE BIVALENT CONE AND TOPOGRAPHY The adoption in the Keratron Onda of a double pair of photoelectric cells on the external edge of the optical head makes it possible to choose between the near distance, for maximum peripheral coverage, and the distance that is 3 mm farther away, to reduce invasiveness.
  • Page 19 Keratron Onda Installation and operating manual OPTIKON 2000 Figure 5-4: Hartmann-Shack method (or S/H, example) Behind the array is placed a CCD sensor that acquires the points projected by the lenslets. The pattern acquired in this manner is analyzed on a personal computer with the help of an algorithm developed specifically for this purpose.

  • Page 20: Main Features

    ® Keratron Onda Installation and operating manual OPTIKON 2000 The price to be paid for this is a greater complexity of the algorithm, which results in a longer calculation time. 5.1.4 MAIN FEATURES KERATRON® ONDA is comprised of a central unit built around an embedded PC.

  • Page 21: Technical Specifications

    ® Keratron Onda Installation and operating manual OPTIKON 2000 TECHNICAL SPECIFICATIONS PARAMETER SPECIFICATIONS Manufacturer:....... OPTIKON 2000 S.p.A. Via del Casale di Settebagni 13 00138 Rome - Italy ® Model ........... Keratron Onda Regulatory conformity: ....93/42/EEC Directive on medical devices Technical standards: ....
  • Page 22 ® Keratron Onda Installation and operating manual OPTIKON 2000 PARAMETER SPECIFICATIONS Distance error ......BFS deviation with Slit Lamp Adapter typical within± 0.15D Misalignement......Mean deviation on the map: ± 0.1 with misalignement up to 1mm ABERROMETRY Analysis area on the pupil....

  • Page 23: Electromagnetic Compatibility Tables

    ® Keratron Onda Installation and operating manual OPTIKON 2000 ELECTROMAGNETIC COMPATIBILITY TABLES 5.3.1 GUIDANCE MANUFACTURER’S DECLARATION – ELECTROMAGNETIC EMISSIONS ® The Keratron Onda is intended for use in the electromagnetic environment specified ® below. The customer or the user of the Keratron Onda should assure that it is used in such an environment.

  • Page 24: Electromagnetic Immunity

    ® Keratron Onda Installation and operating manual OPTIKON 2000 5.3.2 GUIDANCE MANUFACTURER’S DECLARATION – ELECTROMAGNETIC IMMUNITY ® The Keratron Onda unit is intended for use in the electromagnetic environment ® specified below. The customer or the user of the Keratron Onda should assure that it is used in such an environment.
  • Page 25 ® Keratron Onda Installation and operating manual OPTIKON 2000 NOTES is the a.c. mains voltage prior to application of the test level Note 1: At 80 MHz and 800 MHz, the higher frequency range applies. Note2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
  • Page 26 ® Keratron Onda Installation and operating manual OPTIKON 2000 5.3.3 RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE ® AND MOBILE RF COMMUNICATION EQUIPMENT AND THE KERATRON ONDA UNIT ® The Keratron Onda is intended for use in an electromagnetic environment in which ®...

  • Page 27: Light Emission

    ® The Keratron Onda contains various light sources. According to standard IEC 60825-1:1993 + A1:1997 + A2:2001 the Keratron Onda is a Class 1 LED unit. Under any operating condition the maximum power emitted is less than the values indicated in the table below :...

  • Page 28: Composition

    SOFTWARE DESIGNER Both the Keratron® Onda software in the unit and the Keratron® Scout software in the PC communicating with the unit are products of Optikon 2000 S.p.A. For questions regarding updates and reporting errors or corrections, please contact: Optikon 2000 S.p.A.

  • Page 29: Not Supplied Accessories

    Refer to Electrical warnings (refer to section § ). TRADEMARKS: Windows 2000, Windows XP, Windows Vista, and Windows 7 are registered trademarks of Microsoft Corporation Access is a registered trademark of Microsoft Corporation Keratron is a registered trademark of Optikon 2000 S.p.A 2010-06-07 Rev.0 Code 161401EN 5-15...
  • Page 30 ® Keratron Onda Installation and operating manual OPTIKON 2000 THIS PAGE IS INTENTIONALLY BLANK 2010-06-07 Rev.0 Code 161401EN 5-16...

  • Page 31: Installation

    If the package or contents are damaged, notify the carrier (post office, railway or shipping agent) and Optikon 2000 as soon as possible. Check that the contents correspond to those indicated on the attached shipping documents.

  • Page 32: Installation Procedure

    ® Keratron Onda Installation and operating manual OPTIKON 2000 INSTALLATION PROCEDURE ® After the Keratron Onda has been placed on the support surface and the wheel protection covers have been placed in their position, the connections are to be made to the power supply and, if necessary, to a personal computer.
  • Page 33 PC to a power outlet that is separate from the one to which the Keratron® Onda is connected. Whenever the Keratron Onda is connected to a PC for which it is not known with certainty whether the previously cited standards are being observed, the patient could be exposed to excessive dispersion currents (refer to section §...
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  • Page 35: Using The Keratron® Onda

    USING THE KERATRON® ONDA INITIAL SCREEN The Keratron Onda is turned on by placing the power switch (1 in Figure 5-1) in the “I” position. After a few seconds the user will see the screen shown below in Figure 7-1, and at the same time an automatic procedure will be initiated to check the motors (“Motor Diagnosis”).
  • Page 36 Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-2: Possibility of repeating the motor calibration and verification test Once the test has been performed again, if the procedure does not reveal any errors, the user may proceed by pressing the “Continue” key or waiting for the software to proceed automatically after approx.

  • Page 37: Topography Calibration [Calibration]

    ® Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-4: The “Motor Diagnosis” test found an error regarding the precision of the motor’s positioning TOPOGRAPHY CALIBRATION [CALIBRATION] Selecting [Calibration] on the touchscreen accesses the section regarding the calibration of the instrument for topography.
  • Page 38 Figure 7-7. Pressing the [OK] key causes the machine to perform an initial reading of the photoelectric cells that are free of obstacles. If the operator presses the [Abort] key, the Keratron Onda returns to the initial screen, exiting calibration.
  • Page 39 Onda Installation and operating manual OPTIKON 2000 On the back of the “sphere” is glued a label (Figure 7-10) that lists, next to the word “Sphere,” the diopter power of its front surface. If that value is different from the one listed in Figure 7-9, it must be corrected using the two light blue arrows.
  • Page 40 Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-11: Screen during calibration After you have acquired the image, only for the first of the six steps, the operator is requested to confirm whether the acquired sphere appears clean and free of dust grains (refer to Figure 7-12).

  • Page 41: Settings

    Keratron Onda Installation and operating manual OPTIKON 2000 Otherwise, if the [NO] key is pressed, you will return to the screen shown in Figure 7-9. The message “Step 1 of 6” informs the operator of the current calibration step. The described sequence is repeated another 5 times until the concluding message appears (Figure 7-14).
  • Page 42 (Onda.exe and Onda.dll). The same information is listed for the resident firmware in the unit’s electronics. Optikon 2000 S.p.A. can be consulted as the software designer of all of these applications.
  • Page 43 Keratron Onda Installation and operating manual OPTIKON 2000 Specifically, selecting the Motor diagnosis option will initiate the same procedure executed at the time of startup (refer to section 7.1). If the calibration as well as the precision, dynamics, and responsiveness tests are completed successfully, the message shown in Figure 7-17 will appear on the screen.
  • Page 44 ® Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-19: Configuration for the Ethernet connection with a PC NOTE : The variation of the network configuration parameters implies also a modification of the analogous configuration on the external PC. Unless this operation is performed by personnel with specific training on PCs or on LAN configuration, it is advisable not to modify the default values.

  • Page 45: Service

    (calculated from the VL map). SERVICE The Service section is intended to be used under the supervision of Optikon 2000 S.p.A. personnel or personnel authorized by them for updates or internal tests of the unit’s functioning.

  • Page 46: Corneal Topography

    ® Keratron Onda Installation and operating manual OPTIKON 2000 CORNEAL TOPOGRAPHY If the unit has not been previously calibrated (refer to “Calibration” in section §7.2), pressing [Topography] on the initial screen will cause the following message to appear: Figure 7-21: Message that calibration is missing Otherwise, pressing the button on the joystick will cause a topographic acquisition to be initiated, and the screen will appear as shown in Figure 7-22.
  • Page 47 Keratron Onda Installation and operating manual OPTIKON 2000 pointing up (▲), indicates moving closer to the eye, while the upper LEDs, with arrows pointing down (▼), indicates moving away from the eye; if the arrow changes direction and points up, this means that the exact focus point has been passed.
  • Page 48 Figure 7-24: Sending data to the external PC Figure 7-25: The external PC is not present In both cases the Keratron Onda asks the operator whether the image must be discarded or stored locally for subsequent transfer. The maximum number of images that can be stored locally is 8.
  • Page 49 Keratron Onda Installation and operating manual OPTIKON 2000 If you respond [Yes], from that time on will appear an indicator (1 in Figure 7-26) that keeps count of the number of images stored locally and a button [Send to PC] (2 in Figure 7-26) to be pressed at the end of the test to send the entire sequence of images to the external PC all together at the same time.

  • Page 50: Topo-Aberrometry [Topo-Aberrometry]: Acquisition Of Images

    Keratron Onda Installation and operating manual OPTIKON 2000 Pressing the symbol for printing on the toolbar above (1 in Fig. 7-27) when the “Scout” software’s acquisition window is open will initiate the printing of the screen itself on the previously designated printer of the PC.
  • Page 51 ® Keratron Onda Installation and operating manual OPTIKON 2000 NOTE: This choice is made at the beginning of each test (max. 8 acquisitions, all at the same operating distance), otherwise all of the previously acquired images will be eleted. (refer to Figure 7-29).

  • Page 52: Topo-Aberrometry: Acquired Image

    Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-31: Screen at the end of defocus compensation In topo-aberrometry the wavefront sensor image is shown next to the topography image, thereby allowing the operator to understand whether the retinal reflection is adequate or whether it is necessary to center the image so that the SLD band correctly enters the pupil area.
  • Page 53 ® Keratron Onda Installation and operating manual OPTIKON 2000 taken after approximately 800 msec, is normally used for photopic pupillometry. The third is the wavefront sensor image. If the images are visibly moved or contain artifacts, they can be discarded immediately by pressing [Discard] and returning to the acquisition status.
  • Page 54 Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-35: Topo-Aberrometry at the end of the acquisition The images are sent to the external PC with the command [Accept]. The Keratron Scout program must be running on the external computer, with the acquisition mode selected.
  • Page 55 ® Keratron Onda Installation and operating manual OPTIKON 2000 When, as in Figure 7-37, you select [High Order], the corneal and ocular aberrometries are displayed, with the image limited to the orders of the Zernike − − polynomials from the third to the seventh order ( ……...
  • Page 56 ® Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-39 is suspicious, because the wavefront sensor image contains a corneal reflection and fogging. Figure 7-39: Aberrometry with an intentional corneal reflection Double clicking this image allows you to note the presence of exclusions in the pupil gradient maps (Figure 7-40) produced by individual irregularities in the sensor image.
  • Page 57 ® Keratron Onda Installation and operating manual OPTIKON 2000 The line VL (visible light) refers to the second image, with the pupil in miosis after approximately 1 second of exposure to the light of the yellow-amber LEDs. 3. The patient’s refraction (Rx) measured at the cornea (vd=0) in sphere/cylinder axis°...
  • Page 58 Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-42: Contextual menu for selecting different scales for the Ocular Wavefront Aberration of the High Orders For example, as shown in Figure 7-42, in the window in which the Ocular Wavefront is displayed, it is possible to select the interval of the image scale from a range of values.
  • Page 59 Keratron Onda Installation and operating manual OPTIKON 2000 Figure 7-44: Contextual menu of the patient’s refraction (Rx): choice of the distance of the vertex Figure 7-45: Contextual menu of the patient’s refraction (Rx): choice of the resolution Pressing the symbol for printing on the toolbar above (1 in Fig. 7-36) when the “Scout”...

  • Page 60: Aberrometry

    ® Keratron Onda Installation and operating manual OPTIKON 2000 ABERROMETRY Although a stand-alone aberrometry section is on the main screen, it is under ® development and is planned to be included in a future release of the Keratron Onda software.

  • Page 61: Troubleshooting Guide

    Turn off the unit. If the manages the band problem persists after emission source turning the unit back on, (SLD) has detected contact the Optikon a fault and has 2000 S.p.A. Service stopped functioning. Department. The motors for Repeat the acquisition.
  • Page 62 ® Keratron Onda Installation and operating manual OPTIKON 2000 THIS PAGE IS INTENTIONALLY BLANK 2010-06-07 Rev.0 Code 161401EN...

  • Page 63: Keratron® Scout Software On The External Pc

    A printer has to be installed and set as default before running the Scout.exe software. DOWNLOAD THE KERATRON SCOUT FROM THE WEB Go to the Web site http://www.optikon.com/scoutmain.htm The procedure is different depending on if you are registered or not.

  • Page 64: Keratron ® Scout Software Installation

    • Fill all the items, and click the “Register Me” button • You will be enabled to download within 24 hours, receiving a confirmation e- mail from Optikon 2000. IF YOU ARE ALREADY REGISTERED • Click the hyperlink “Go to the download page”...

  • Page 65: Configuration Of The Ethernet Connection

    Keratron Onda Installation and operating manual OPTIKON 2000 Independently if the installation has been made from CD or downloaded version, the setup procedure could notify some messages, like DLLs version conflicts etc. See the troubleshooting section in this manual for the proper action CONFIGURATION OF THE ETHERNET CONNECTION ®...
  • Page 66 Select “Use the following IP address” (1) and in the field IP address (2) and in the field Subnet Mask (3) enter the following configurations, respectively: 192.168.0.140 255.255.255.0 Figure 9-3: Configuration of the addresses to use with Keratron Onda In the case of Vista and Windows 7, the following is a possible configuration sequence: 2010-06-07 Rev.0...
  • Page 67 ® Keratron Onda Installation and operating manual OPTIKON 2000 Start →Control Panel → Display Network Status and Activity At the end of the sequence, in the Sharing and network connections center window select the Display Status hyperlink (1 in Figure 9-4) for the network selected for the connection.
  • Page 68 Figure 9-7, select (1) Use the following IP address and enter the numbers as shown in the figure (2 and 3). Figure 9-7: Configuration of the addresses for use with the Keratron Onda NOTE: The entry of values that are different from those suggested could cause the unit not to function.

  • Page 69: Installation Of The Wi-Fi Connection

    ® Keratron Onda Installation and operating manual OPTIKON 2000 To configure the network it is necessary to be in possession of system administrator privileges (Administrator). INSTALLATION OF THE WI-FI CONNECTION ® The use of the wireless connection is one of the future features of the Keratron Onda and is currently under development at the time this manual is being written.

  • Page 70: Keratron Scout Software Structure

    ® Keratron Onda Installation and operating manual OPTIKON 2000 ® KERATRON SCOUT SOFTWARE STRUCTURE Default database folder Scout Trialsets folder (void after first installation ® Keratron Scout system files Be careful to this folder!! Put here imported print-templates, and those you create The SW puts here temporary files *.tb...

  • Page 71: Customizing The Keratron® Scout Software

    ® Keratron Onda Installation and operating manual OPTIKON 2000 CUSTOMIZING THE KERATRON® SCOUT SOFTWARE You can customize/change SW behaviour and toolbar buttons. Change the SW behaviour using the “Options” window under the “Tools” menu. Customize the toolbars simply right-click on it.

  • Page 72: Uninstall Keratron ® Scout Software

    ® Keratron Onda Installation and operating manual OPTIKON 2000 figure 9-9: Identification of the Scout software version ® UNINSTALL KERATRON SCOUT SOFTWARE We can imagine two different methods: the first one uses the Windows standard uninstall procedure 1. Start “Control Panel”...

  • Page 73: Description Of The Commands And Screens Of The Keratron® Scout

    (command or key “?” on the menu bar). 9.10.2 TRANSFERRING AN IMAGE FROM KERATRON® ONDA From the “Keratron Onda” acquisition menu or from the icon on the Scout software’s ® toolbar, open: “Acquire Onda images” and wait for data to be sent by the Keratron Onda.

  • Page 74: Troubleshooting Of The Keratron ® Scout Software

    Keratron Onda Installation and operating manual OPTIKON 2000 The rings centering and tracking is made evident in the Photo-process window. Here you can check how and where within the map this has been made properly, without artifacts, and here you can intervene by adjusting processing conditions and/or erasing bad tracks.

  • Page 75: The File Scout.ini

    ® Keratron Onda Installation and operating manual OPTIKON 2000 After the installation check the proper working of software running and test Scout program. If any error messages appears (Automation error, DLL xxx.dll not fount etc) the suggested actions are: • Unload the Scout software (see §0) •...

  • Page 76: Changing The Pc

    ® Keratron Onda Installation and operating manual OPTIKON 2000 • Every user will point to his database using “File->Open Database”, or from “File->Recent Database” list. 9.11.4 CHANGING THE PC • Backup the Database(s) (on network, cd-rom…).. • Backup the “C:\Keratron\Scout.ini” file (options, settings, MRU path) •...

  • Page 77: Miscellaneous Problems

    The following guide lists some malfunctions which may occur, the symptoms and the ® corrective actions. If the Keratron Scout system remains inoperative even after performing the corrective actions indicated below, contact Optikon 2000 S.p.A. sales/service department. SYMPTOMS CORRECTIVE ACTION...
  • Page 78 ® Keratron Onda Installation and operating manual OPTIKON 2000 SYMPTOMS CORRECTIVE ACTION reported at the top of the Scout desktop). Open the ‘tabLock’ table. Modify the first record of the table from the present value to ‘Unknown’. Save and exit...

  • Page 79: Updating Onda.exe

    OPTIKON 2000 9.12 UPDATING ONDA.EXE To update the Keratron Onda software you need to transfer it onto a USB flash drive from the Keratron Scout software. Insert the provided USB flash drive into the PC. Using the Keratron Scout software, it is possible to proceed with the manual updating by means of the command: Tools→...
  • Page 80 Then remove the USB flash drive. In any case, the Keratron Onda keeps a copy of the previous software version. If you would like to restore it, you just need to insert the UBS flash drive and select «...

  • Page 81: Cleaning, Sterilization And Maintenance

    Cleaning must be performed as follows: • Switch off the Keratron Onda. • Unscrew the 2 screws at the right and left sides of the cone using the appropriate socket wrench.

  • Page 82: Cleaning The Accessories That Are Not Provided

    To maintain system safety, the compliance to EN60601-1 leakage current limits should be tested at least once a year. Please, inquire with the Bioengineering Department in your clinic or with your local Optikon 2000 S.p.A. Distributor/Service Center. In topography periodically acquire the calibration sphere and compare the curvature value you obtain with the value listed on the sphere itself.
  • Page 83 Keratron Onda Installation and operating manual OPTIKON 2000 After the image is acquired, process it using the command [Process All]. For the aberrometry, a rotationally symmetric map like the one in Figure 10-1 should appear. In the panel shown in Figure Rx (vd=0), verify the sphere’s refraction by setting pupil = 4 mm as well as pupil = 6 mm, and compare it with the nominal data listed on the calibration sphere itself.

  • Page 84: Replacing The Fuse

    Installation and operating manual OPTIKON 2000 The purpose of this verification with the calibration sphere is to check that the parameters measured by the Keratron Onda do not vary significantly from the time of calibration in the factory. 10.3.2 REPLACING THE FUSE ®...

  • Page 85: Index

    ® Keratron Onda Installation and operating manual OPTIKON 2000 11 INDEX dynamic pupillometry.....7-10 A/D converter ........5-3 Abort.........7-5; 7-8 electrical specifications ....5-7 anaesthetics ........3-2 EN 60601-1 ........3-4 anesthetics ........3-2 entrance pupil ........5-4 apex ........5-3; 7-13 environment........3-2 artefacts ..........3-2 environmental specifications ..5-6 artifacts..........7-13...
  • Page 86 ® Keratron Onda Installation and operating manual OPTIKON 2000 meridians.........5-4 Restore previous version....9-19 mobile multiple power outlets ..3-3 Sim K..........7-15 Offset..........7-15 SLD ........ 5-4; 7-16; 8-1 OK ...........7-8 software version ......9-10 operating room ........3-4 sources of heat ........3-2 Operator ........9-17 spatial frequency ......5-5...

  • Page 87: Appendix

    ® Keratron Onda Installation and operating manual OPTIKON 2000 12 APPENDIX Eyelash artifacts Shadow projected Cone by eyelashes Detector This map shows a high-energy zone Artifact!! Caution! Eyelashes fool the detector The eyelashes’ shadow High-energy zone crosses the horizontal line...

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