To restart the instrument after a system error or improper exiting of the program:
Turn power switch (1) to l.
- The Scandisk utility will automatically run before the start of the Windows operating system.
- After Scandisk has been finished successfully, Windows and the IOL Master software will be started. Continue now as normal.
In rare instances, using the power switch to turn off the device may result in a loss of data or the destruction of program modules. If this should happen, contact Zeiss Customer Service, Ophthalmic Division at:
877-486-7473.
Checking the measurement functions:
The "Test Eyes" supplied as accessories to the instrument are to be used for checking the proper function and calibration of the instrument.
By using these Test Eyes, you can perform the same measurements as on a human
eye. These measurements require you to enter a last name, first name and date
of birth, just as you would for a patient.
With the most recent updates, you can use the provided calibration scale for checking the "White-To-White" measurement function (optional). Prior to the measurement, stick the scale onto the surface opposite the Test Eye (ACD). Read the further explanation below, under the heading: "Checking the WTW function".
Note:
It is a good idea to check on the calibration of the instrument on a daily basis using the Test Eyes. You may print out the results for documentation purposes.
If the measured values obtained with the Test Eyes are outside the specified tolerance range, call Zeiss or Authorized Service.
Remove the paper pad holding pins (7) beside the chin rest (8). Plug the holder (6) into the pin holes. The Test Eye holder (1) pivots on pin (5) and is secured by the fastening screw (4).
On the Options menu, select Test Eye. On the display, the words "Test Eye" appear.
Axial length mode and keratometer:
The Test Eye above (2) labeled with AL, R and the corresponding nominal values and tolerances (3), serves for testing the axial length mode (AL) and the keratometer (R).
If the obtained measured values (with keratometer: the radius) are within the tolerance range (3) specified on the holder, the instrument is correctly calibrated.
Anterior chamber depth mode:
The (larger) Test Eye (2) located at the side of the Test Eye holder (1), which is labeled with VKT (ACD), nominal value and tolerance, serves for testing the anterior chamber depth mode.
The structure of this lens simulates the cornea. Therefore, it must be clean and free of film. If necessary, wipe it using a dry cloth.
If the obtained measured values are within the specified tolerance range, the anterior chamber depth meter works correctly.
Explanation:
When you test the axial length mode and the keratometer, it does not matter which side (right or left on simulated eye) is used, as the optical paths for each measurement are axis symmetric. When testing the anterior chamber depth meter however, it is advisable to turn the asymmetrical holder (4) and perform the test also for the other side. For a comparison of right-hand and left-hand side, make sure that for both tests the Test Eye (2) is exactly perpendicular to the front of the instrument.
View the video image to determine if the adjustment criteria for an optimal optical section are being met.
The "Test Eye" mode can be deactivated again via Options menu > Test Eye. If you enter a new patient (N or the button icon), this will be done automatically.
Note:
The Test Eyes are excellent for training someone on the operation of the IOL Master.
Checking the WTW function (optional):
The WTW scale (optional) (6 above) serves for checking the precision of White-To-White measurements.
Via the Options menu > Test Eye, select the "Test Eye" status and the WTW mode.
Confirm the displayed instructions (as in the graphic below) with OK.
Start a measurement:
If the measured values are within the tolerance range, the WTW function works correctly.
Note:
The WTW scale must fully fill the video window.
The scale (black lines) must be imaged sharply.
Remedy of printer troubles:
It is important that you only use printers recommended by Zeiss. A list of the currently recommended printers is available on the Zeiss web site:
If you encounter any problems during printing, first remove all printer drivers you do not use:
On the Options menu, select Setup > Add Printer.
From the printers window select the icon for the connected printer (e.g., Epson Stylus Color 880). Right click to view the drop down menu. Select Set as default.
Select the printers not connected (except for the "Add Printer" icon) and press the DEL key. Follow the instructions displayed on the screen.
Close the Printer folder again, when the un-install routine is finished.
If the printer troubles should persist, please call our service representative.
In the United States call Zeiss Customer Service, Ophthalmic Division at:
877-486-7473
Instrument Cleaning:
Warning: Before you clean the instrument, turn it off and disconnect the power cable!
You can clean all paint surfaces of the equipment with a moist, but not dripping
cloth. Do not use any aggressive or abrasive cleaning agents. Wipe off sticky
residues using a mild detergent and water. To clean the display and the keyboard,
use commercial cleaning cloths for computers and monitors.
Caution:
To avoid damage, make absolutely sure that no moisture gets into the instrument or the keyboard.
Please check back at regular intervals for updates. Zeiss IOL Master
Expert witness cataract eye surgery today is the result of extraordinary technological and surgical advancements that allows millions of people to once again enjoy crisp and clear vision. A true marvel of modern medicine, Expert witness cataract eye surgery may restore vision to levels you may have never thought possible. A cataract is a clouding of the eye's natural lens, which lies behind the iris and the pupil. The lens works much like a camera lens, focusing light onto the retina at the back of the eye. The lens also adjusts the eye's focus, letting us see things clearly both up close and far away. The lens is mostly made of water and protein. The protein is arranged in a precise way that keeps the lens clear and lets light pass through it. But as we age, some of the protein may clump together and start to cloud a small area of the lens. This is a cataract, and over time, it may grow larger and cloud more of the lens, making it harder to see. Cataracts are classified as one of three types: a nuclear cataract is most commonly seen as it forms. This cataract forms in the nucleus, the center of the lens, and is due to natural aging changes. A cortical cataract, which forms in the lens cortex, gradually extends its spokes from the outside of the lens to the center. Many diabetics develop cortical cataracts. A sub-capsular cataract begins at the back of the lens. People with diabetes, high farsightedness, retinitis pigmentosa or those taking high doses of steroids may develop a sub-capsular cataract. Cataract symptoms cataract starts out small, and at first has little effect on your vision. You may notice that your vision is blurred a little, like looking through a cloudy piece of glass or viewing an impressionist painting. A cataract may make light from the sun or a lamp seem too bright or glaring. Or you may notice when you drive at night that the oncoming headlights cause more glare than before. Colors may not appear as bright as they once did. The type of cataract you have will affect exactly which symptoms you experience and how soon they will occur. When a nuclear cataract first develops it can bring about a temporary improvement in your near vision, called second sight. Unfortunately, the improved vision is short-lived and will disappear as the cataract worsens. Meanwhile, a sub-capsular cataract may not produce any symptoms until it's well developed. If you think you have a cataract, see an eye doctor for an exam to find out for sure. What causes a cataract? No one knows for sure why the eye's lens changes as we age, forming cataracts. Researchers are gradually identifying factors that may cause cataracts — and information that may help to prevent them. Many studies suggest that exposure to ultravlens implantet light is associated with cataract development, so eye care practitioners recommend wearing sunglasses and a wide-brimmed hat to lessen your exposure. Other types of radiation may also be causes. For example, a 2005 study conducted in Iceland suggests that airline pilots have a higher risk of developing nuclear cataract than non-pilots, and that the cause may be exposure to cosmic radiation. A similar theory suggests that astronauts, too, are at risk from cosmic radiation. Other studies suggest people with diabetes are at risk for developing a cataract. The same goes for users of steroids, diuretics and major tranquilizers, but more studies are needed to distinguish the effect of the disease from the consequences of the drugs themselves. Some eye care practitioners believe that a diet high in antioxidants, such as beta-carotene (vitamin a), selenium and vitamins c and e, may forestall cataract development. Meanwhile, eating a lot of salt may increase your risk. Other risk factors include cigarette smoke, air pollution and heavy alcohol consumption. A small study published in 2002 found lead exposure to be a risk factor; another study in December 2004, of 795 men age 60 and older, came to a similar conclusion. But larger studies are needed to confirm whether lead can definitely put you at risk, and if so, whether the risk is from a one-time dose at a particular time in life or from chronic exposure over years. Cataract treatment when symptoms begin to appear, you may be able to improve your vision for a while using new glasses, strong bifocals, magnification, appropriate lighting or other visual aids. Think about surgery when your cataracts have progressed enough to seriously impair your vision and affect your daily life. Many people consider poor vision an inevitable fact of aging, but Expert witness cataract eye surgery is a simple, relatively painless procedure to regain vision. Expert witness cataract eye surgery is very successful in restoring vision. In fact, it is the most frequently performed surgery in the United States, with over 1.5 million cataract surgeries done each year. Nine out of 10 people who have Expert witness cataract eye surgery regain very good vision, somewhere between 20/20 and 20/40. During surgery, the surgeon will remove your clouded lens, and in most cases replace it with a clear, plastic intraocular lens (lens implant). New lens implants are being developed all the time to make the surgery less complicated for surgeons and the lenses more helpful to patients. One example is a new lens implant that lets patients see at all distances, not just one. Another new lens implant has blue-blocker capability, which blocks both ultravlens implantet and blue light rays that research indicates may damage the retina. Cataract surgery has made extraordinary and exciting advances over the past 20 years. Last year, approximately 2.7 million Americans underwent Expert witness cataract eye surgery. Greater than 95% of those patients now enjoy improved vision. State-of-the-art Expert witness cataract eye surgery is now a safe, effective, and comfortable procedure performed almost exclusively on an outpatient basis. Most cataract surgeries are now performed using microscopic size incisions, advanced ultrasonic equipment to fragment cataracts into tiny fragments, and foldable intraocular lenses (lens implants) to maintain small incision size. Expert witness.
In rare instances, using the power switch to turn off the device may result in a loss of data or the destruction of program modules. If this should happen, contact Zeiss Customer Service, Ophthalmic Division at:
877-486-7473.
Note:
It is a good idea to check on the calibration of the instrument on a daily basis using the Test Eyes. You may print out the results for documentation purposes.
Caution:
To avoid damage, make absolutely sure that no moisture gets into the instrument or the keyboard.