Safety IOLMaster, IOL Master, Intraocular Lens Calculations Zeiss IOLMaster
Carl Zeiss Meditec IOLMaster, Safety IOL Master, Intraocular Lens Calculations Zeiss IOLMaster Eye Cataract Surgery Eyes

2006-05-12
Safety Notes

Warren Hill, M.D.
Carl Zeiss Meditec IOLMaster - IOL Master
Safety Notes

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Safety Notes
General:

The Zeiss IOL Master has been developed and tested in accordance with Carl Zeiss safety standards as well as national and international regulations. A high degree of instrument safety has been ensured.

Be sure to observe all the safety notes and information in the manual and on device labels. A copy of the complete manual is available for download at:


http://www.zeiss.de/iol_master

Throughout our site on the Zeiss IOL Master we have marked certain areas of importance with the following pictograms:

  Warning - safety information!

      Caution - danger to instrument!

Proper operation of the IOL Master is imperative for its safe functioning. Therefore, please read these instructions thoroughly before using the instrument. You may obtain further information from the United States call Zeiss Customer Service, Ophthalmic Division by calling:

877-486-7473

Standards and Regulations:
  • The IOL Master has been designed in compliance with the standards and regulations as specified in section: Technical Data - Compliance.
  • Quality Assurance of Carl Zeiss meets the requirements as laid down in DIN ISO 9001/EN 46001.
  • The European Medical Device Directive (MDD) classifies the device as a Class lla device.
  • The device complies with the EC Medical Device Directive 93/42/EEC and their national equivalent in form of the German Medical Product Act (MPA).

  Installation and Use:
  • Do not operate the IOL Master

    - In explosion-risk areas

    - In the presence of flammable anesthetics and volatile solvents such as alcohol, benzine or similar chemicals.
  • Do not store or use the IOL Master in damp rooms. Avoid dripping or splashing fluids near the instrument.
  • The IOL Master may only be modified and repaired by service technicians employed by Zeiss.
  • The manufacturer is not liable of damages caused by unauthorized persons tampering with the IOL Master; such tampering will also void any rights to claim under warranty.
  • Use the IOL Master only with accessory equipment delivered by Carl Zeiss.
  • Only instructed and trained personnel may operate the IOL Master.
  • Keep the users manuals always at hand.
  • The IOL Master may only be opened by service technicians employed with or authorized by Zeiss.

Safe Operation:

  Electrical safety
  • The built-in power supply unit is short-circuit-proof and does not contain externally accessible fuses.
  • Electrical hazards to patients and operators are eliminated if the IOL Master is used properly.
  • Only Zeiss-authorized service technicians may open and setup the IOL Master.

  Light emission from the IOL Master
  • The IOL Master emits light in the visible and infrared spectral regions. It keeps the limit values as specified by DIN EN ISO 15004 "Ophthalmic Instruments Fundamental requirements and test methods".
iol master laser device
  • The limit values as specified for Class 1 laser devices by EN 60825-1 are kept only if the IOL Master is operated as intended (limiting 20 axial length measurements per eye and per day).
  • A maximum of 20 axial length measurements per eye and per day are permitted with the IOL Master. With proper operation of the IOL Master this value cannot be exceeded.

  Operational requirements

Please take care that the following operational requirements are met when using the IOL Master:
  • Use the power cable supplied with the IOL Master. If the instrument is mounted to a Zeiss instrument table, it is powered through this table.
  • The IOL Master is plugged into a power outlet that has a properly connected protective ground connection.
  • All cords, cables and plugs are in perfect working condition and secured where provided.
  • Avoid the use of an extension cord or cable. If the protection is reduced or electrical cords are damaged, discontinue use and take care that the IOL Master is not operated inadvertently. Call Zeiss service.

  Proper instrument use
  • Always enter patient data first (last name, first name, and date of birth).
  • Before measuring the anterior chamber depth, inform the patient that the light will flicker during the measurement.
  • Instantly turn off the power switch of the IOL Master and disconnect the power cable if uncertain problems arise.
  • If the IOL Master does not respond to your commands, turn off the power switch and then restart.
  • To exit the program when finished with use, click on the button of the toolbar. Turn instrument off via the power switch.

    shut down
Intended Use:

The IOL Master is to be used only for the measurement of axial length, corneal curvature, anterior chamber depth, and optionally for "White-To-White" determinations of the human eye, as well as for the calculation of the required intraocular lens.

The responsibility for any other use than the one intended exclusively lies with the user.

The IOL Master may only be used in combination with accessory units approved by Zeiss. Please consult Zeiss or an authorized service representative regarding use of other accessories.

Please check back at regular intervals for updates.
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Cataract Surgery

2006-05-12
cataract surgery
 
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.