ATLAS_995_Main

Need Your Zeiss Atlas Repaired?

Tell us what’s wrong with your unit– we’ll arrange picking it up, and repair it back to factory specifications.

 

Start A Repair  >

When the hard disk is nearing capacity, the instrument will prompt you to archive examinations on media or external drive using the Archive/Restore option in the Utilities function. The instrument prompts you to archive exams when the hard drive is nearing capacity. You may archive at any time however.

To archive patient examinations, you may let the instrument select the oldest exams on the hard disk. Or you can manually select:

• all exams assigned to specific groups,
• all exams for the patients of specific doctors, • all exams for specific patients,
• specific exams.

The selected exams are removed from the hard disk and stored on external hard drive or media.

To restore patient exams, you select the exams from the external drive or media, and create a list. The exams on the list are restored to the hard drive.

Note: Exams which have been archived cannot be read on other instruments. To look at exams from other instruments, use the export/import function.

 

Open the Archive/Restore screen by clicking the Archive button on the Utilities screen.

The data in the Map displays can be shown in four different diopter/millimeter scales:

•Standard • AutoSize • Custom

• Uniform (MultiVue Display only, see page 4-3 for a description of the uniform scale)

page36image17768

The colors of the corneal display correspond to the values shown on the scale at the left of the screen. Each color represents a different value.

Red, orange, and yellow are “hot” colors and show the steeper areas of the cornea. Green is an “intermediate” color. Light and dark blue are “cool” colors and show the flattest areas.

Note: The scale can be changed from diopters to millimeters in the Change Preferences screen according to user preferences.

When you change the scale, the display changes to show the new diopter values.

 

The Standard scale default ranges from 38.5 to 50.0 in 0.50 diopter increments. This scale can be changed to a user defined default in the Utilities Menu from the Change Preferences screen under change Standard Scale. The Standard Scale can be set to user defined defaults, or it can be reset to the default scale, simply by clicking on this button and manually setting the Standard Scale to the user preferences.

To display the data in Standard scale, click the Standard button.

 

AutoSize uses the steepest and flattest readings from the map to set the minimum and maximum values of the scale in diopter increments as small as 0.25 diopters. These values are unique to any given map. AutoSize typically provides the most detail.

Note that the scale range is a minimum of 6 diopters. Thus, on a map where the data varies by less than 6 diopters, the minimum and maximum values on the AutoSize scale won’t match the minimum and maximum values of the map data.

To display the data in AutoSize scale, click the AutoSize button.

 

Custom is used to change the diopter increments and the range of the scale. You can select diopter increments from .25 to 3.75 by clicking on the up and down arrows. You can move the entire range by positioning the cursor on the slide, holding the GlidePoint button down, and dragging the range up or down.

To display the data in Custom scale, click the Custom button.

Patient data can be reviewed as a single map or view or as:

  • An alternate data view, such as Tangential Map, Refractive Map, Elevation Map, Irregularity Map, Numerical, Keratometry, Photokeratoscope, or Profile view.
  • A comparative display of more than one exam, such as Trend with Time or OD/OS Compare Display.The MasterVue Control allows you to select alternate data views.
    The MultiVue Displays option allows you to select comparative displaysand Optional Modules.

The ATLAS offers two types of examinations: Full Exam and QuickVue.

Full Exam is a comprehensive eye examination. It provides up to four different images of the patient’s eye and allows you to select the best image. The information is usually displayed as an Axial Map and can be used to:

• Display data in other graphical formats, known as views, or maps such as Numerical View, Keratometry View, Photokeratoscope View, Profile View, Tangential Map, Refractive Power Map, Elevation Map and Irregularity Map.

• Display data from previous examinations to compare eye-to- eye differences and trends over time, as well as overviews of a particular exam.

• Print the display.

Patient Data must be entered to use the Full Exam feature. All input is optional except patient name and right eye/left eye designation. The patient and exam information is automatically saved in the database on the hard drive.

 

QuickVue is a screening tool used for high-volume or routine diagnostics. It captures a single image that may be saved and/or printed after the examination. QuickVue does not require any data input prior to the exam, and the exam may be printed without saving on the hard drive.

  1. Check to see that the joystick is unlocked by turning it counter- clockwise. The projection head should move forward, backward, and from side to side easily.
  2. Position the projection head by moving the base until the live image of the eye appears on the screen. Adjust the height of the instrument by rotating the joystick handle until the rings appear.
  3. Center the crosshairs anywhere inside the smallest ring of the live image.
  4. Move the joystick forward and back to focus the clearest image of the smallest ring.
  5. The instrument’s Cone of FocusTM alignment enhancement feature makes capturing the image easy. You do not have to center the crosshairs exactly in the center of the smallest ring. Setting the crosshairs anywhere within the first ring will ensure high accuracy and repeatability.

The calibration check tests the instrument to make sure it is providing accurate measurements. A calibration bar with three mounted spheres is placed in the chin rest assembly. Using the Calibration option in the Utilities function, capture a series of sphere images that are analyzed to see if the measurements are within the defined diopter ranges. The calibration test is performed on 35, 42.25, and 55 diopter spheres.

We recommend that you run the calibration option at least once a month.

Place the calibration bar in the area provided on the chin rest. Be sure the spheres are facing the projection head.

1. To run the calibration option, click Utilities on the Main Menu. Then select the Test Calibration option by clicking the Test button.

2. The Calibration menu screen appears. Click on the Test button. 3. Focus the projection head on the largest sphere (35D) on the

calibration bar.

4. Align the projection head by centering the crosshairs in the smallest ring of the image displayed.

5. When the image is aligned and focused, press the button on the joystick to capture the image. A message screen appears listing the results as one of the following:

  • UNDER —
    Image capture was under the acceptable diopter value.
  • OVER —
    Image capture was over the acceptable diopter value.
  • PASS —
    Image capture was within the acceptable diopter value.