Tag: FDA

How is Wavefront Technology Used in Lasik Vision Correction?

The wonderful results of Lasik surgery have been improved by research adding new methods, such as Wavefront technology. This technology gives a Lasik physician the ability to see and accurately map even slight variations in the surface of the eye. This gives the physician the ability to more accurately tailor a Lasik operation to the individual, and result in even clearer vision.

The concept behind Wavefront technology was originally developed by astronomers, in order to indicate if a mirror or a lens had slight imperfections in it. It is very important in astronomy to get near perfect optics in order to clearly see the small light sources million of miles away in the universe. In the 1970s a sensor was created to electronically check these surfaces, and a type of this sensor is now used in the Wavefront guided Lasik procedures.

The idea to apply this technique, or to use this sensor, to the field of ophthalmology and later to the specific area of Lasik vision correction, was begun in Germany. The physician Josef Bille began using the sensor in his practice, and this started others to refine the sensor and how it is used and to apply it to Lasik technology. In 1997 the improved sensor, with greater accuracy and speed, was announced to the Lasik laser manufacturers. This allowed the companies that manufacture the Lasik equipment to develop tools using the Wavefront concept for each of their own laser systems.

The FDA approved the first Wavefront guided Lasik vision correction system for general use. Initially, the Wavefront sensor makes a map of the eye’s imperfections, and this map is sent to the laser that is used in the Lasik vision correction portion of the operation. This allows for precise eye alteration in order for Lasik to present the best vision correction possible.

The Wavefront technology used in Lasik can be described easily at an informal level. A small, flat sheet of light (called a wavefront) is passed through the eye, reflected off of the retina, and passed back through the eye and is captured by the Wavefront machine. If the eye were perfect, the light would return as a flat sheet and be captured that way by the Lasik machine. However, any imperfections changes the way that the light returns, and this is detected by the Wavefront part of the Lasik process.

A number of these small, flat sheets of light are sent into each eye from various directions and the results returned generated a three dimensional map of the eye to be used in the Lasik vision correction process. In addition to the commonly known problems of nearsightedness, farsightedness, and astigmatism, there are more than 60 other patterns that are known and can possibly be corrected for.

All of this information generated by the Lasik sensor is converted by software into a set of directions to be carried out by the Lasik excimer laser. Ask your doctor about this exciting advance in Lasik vision correction, and see if this procedure is right for you!

Acupuncture’s Acceptance in America

Acupuncture has been used in China and Japan for centuries, and was introduced into Europe in the 1700s by Jesuit missionaries. However, it has been popular in the United States for only the past twenty or thirty years. Initially, its most dramatic and effective results here in America were to reduce or eliminate pain, where some patients undergoing surgery had no anesthesia whatsoever. Their pain was eliminated during the surgery by use of acupuncture needles.

The National Institute of Health has been interested in both the use and the growing interest in acupuncture, and has had a number of conferences whose main subject is the use of acupuncture. Interestingly, thousands of traditional physicians, dentists, and other health practitioners now use acupuncture for pain relief and other symptoms. Also, currently more than 10 million adults in the U.S. have used acupuncture at some time in the past, or are using it currently. (Though acupuncture is also perfectly safe for children, and frequently children respond more quickly to the treatments than adults.)

The National Institute of Health has looked at many studies on the effectiveness of acupuncture to relieve a specific set of symptoms. There are some outstanding successes, but making any sweeping statement is difficult because many of the studies are not easy to design. Or, more properly, there is some heated discussion on what studies have been so carefully designed that the results are beyond question. But there is general agreement that acupuncture is highly effective for a wide range of symptoms, including pain and nausea after operations, headaches, menstrual cramps, asthma, osteoarthritis, etc. Research is continuing and new results are coming out quite often. One of the best ways to keep up is to search the Internet for your symptom of interest together with the key word “acupuncture”. Also look for websites sponsored by NCCAM, a branch of the National Institute of Health that investigates alternative medicines.

Since the main equipment of an acupuncture practitioner are needles, the needles in an acupuncture office are regulated by the government to ensure safety of the needles. The FDA approves their use by licensed practitioners in acupuncture clinics. The requirements are that the needles are sterile needles and one time use only, so no one need be concerned about the problem with needle contamination. The acupuncture needles are regulated by the same rules as those in your doctor’s office. To avoid any concern, watch carefully that the acupuncture practitioner opens a new, sealed package for each patient and swabs the insertion sites with some kind of disinfectant before inserting the needle (such as alcohol, traditionally used by nurses).

This survey is intended to give an overview of how the traditional medical community and also the institutes of the government have given credibility to the use of acupuncture. Acupuncture has evolved from an interesting import from China to an established technique that many doctors recommend, or have even become trained in the technique themselves. Acupuncture clinics and practitioners now have standards set up and regulated by the government in order to ensure the safety of the clients. It has become an accepted part of the mainstream American health system.

Improving Rheumatoid Arthritis Symptoms

Improving Rheumatoid Arthritis Symptoms
Hans Hasselfors

Rheumatoid arthritis is a disease where white blood cells
suddenly attack healthy tissues, specifically joints and
cartilage. There are a few ways to help ease the symptoms,
depending on which stage of the disease you are in. If you are
in the early stages of rheumatoid arthritis there is a new
disease modifying anti-rheumatic drug (DMARD) which has done an
excellent job in controlling symptoms. It works best in the
initial stages, so if you suspect you may have rheumatoid
arthritis, see your doctor as soon as possible.

There are other options if you are in later stages of rheumatoid
arthritis. These are also helpful if you are still in early
stages. One is to use anti-inflammatory drugs such as aspirin,
ibuprofen, and naproxen. This does a great job reducing pain and
inflammation. However, these have side effects including heart
problems and gastrointestinal bleeding. You can also use
acetaminophen for your rheumatoid arthritis, which does not have
these side effects.

When symptoms are mild, moderate exercising including
stretching, weight lifting, and aerobics ease rheumatoid
arthritis symptoms. Be sure to rest when your joints flare up as
this would just add strain to your aching joints. Stretching is
important because it increases flexibility and is easy enough to
do at any age. When stretching, stop when you feel mild
discomfort and hold for 10 to 30 seconds. Then repeat 3 to 5
times. Weight lifting also improves flexibility as well as
strength and balance. Barbells are easy, convenient, and
inexpensive. Remember to stretch before lifting any weights.
Start with 3 sets of 8 to 10 repetitions. If you would like you
can start with no weights at all (such as going leg lifts for
rheumatoid arthritis in the knees), then add weights when you
can. Lift the weights slowly and evenly to not damage the
cartilage.

Some other popular forms of exercise for rheumatoid arthritis
are aqua therapy and Tai Chi. Be sure to find an actual
therapist as they have specific exercises they do for arthritis
patients. Aerobics instructors may push to far and do further
damage. Tai Chi has no long term studies proving its
effectiveness, but due to testimonials from patients who have
taken Tai Chi, the Arthritis Foundation began offering the
class. Remember to always check with your doctor before starting
an exercise program.

Some other ways to relieve rheumatoid arthritis pain are to lose
weight to take additional pressure off joints, eating a healthy
diet, getting enough sleep, using heat or ice, and possibly
using devices such as a cane, brace, or splint. There are many
resources for additional information on rheumatoid arthritis
including websites, flyers, periodicals, books, etc. Your doctor
should be able to provide you with some reference on where to
look for additional help.

DISCLAIMER: This information is not presented by a medical
practitioner and is for educational and informational purposes
only. The content is not intended to be a substitute for
professional medical advice, diagnosis, or treatment. Always
seek the advice of your physician or other qualified health care
provider with any questions you may have regarding a medical
condition. Never disregard professional medical advice or delay
in seeking it because of something you have read. Since natural
and/or dietary supplements are not FDA approved they must be
accompanied by a two-part disclaimer on the product label: that
the statement has not been evaluated by FDA and that the product
is not intended to “diagnose, treat, cure or prevent any
disease.”

About the author:
About the Author: Hans Hasselfors is the founder of http://www.SubmitYourN
ewArticle.com. You may find varied arthritis articles in our article directory.

Eliminate Your Fears of Lasik!

Thinking about eye surgery using a Lasik procedure is a big step, and many people are a little hesitant to ask the questions that they have. The Lasik procedure, though widely talked about, is not discussed in detail, and people tend to fear the unknown. This report addresses some of the more commonly held fears, and talks about the experience for the vast majority of people that undergo a Lasik procedure.

A most common fear when thinking about a Lasik procedure, or really thinking about any surgery in general, is the possibility of pain during or after the operation. Since the Lasik surgeon works on patients that are conscious, this is a widely held apprehension. In every operation the Lasik surgeon applies numbing drops into the eyes before the procedure starts, and the patient is also given a mild sedative to relax them and make sure that they are comfortable. Though a small pressure to the eye may be felt during the Lasik procedure, the process itself is relatively pain free.

The surgeon does use a laser in the eye to help reshape the cornea during the Lasik procedure. Many folks are worried about the laser being shone directly into the eye, or that they might look away and, due to this, develop a serious complication with their eyes and the Lasik laser beam effects. In actuality, the laser is only active for ten to fifteen seconds for each eye, and the Lasik machine has a tracking system that allows the beam to be on only when the eye is in the correct position.

Another general fear for people contemplating a medical procedure is fear of “the scalpel”. Any Lasik procedure uses only a very small microkeratome blade to approach the eye, or some more recent Lasik innovations have the laser itself created the flap and avoid using any hard surface at all. There is no reason to be concerned about a scalpel, for the Lasik physician does not use one.

Many wonder about the horror stories they hear about this or any other operation, and wonder about serious consequences like going blind. According the government statistics taken by the FDA, there are no reported cases of blindness due to a Lasik operation. Actually, the risk of a serious permanent complication due to the Lasik procedure is less than 1 percent, and the risk of any permanent complications even if not serious (such as light halos) is 3 percent or less. It is extremely rare for a patient to not have improved vision after a Lasik procedure.

If the thought of being awake and having your eyes open during the Lasik procedure bothers you, remember that you will be given a mild sedative for the procedure, and that your eyes will have numbing drops administered to them. If the thought of actually seeing the Lasik physician’s hand approaching your eye is bothersome, be comforted that the surgeon applies drops to the eye that blacks out the vision in that eye for ten to fifteen seconds, which is long enough for the procedure to be done for that eye.

This introduction has hopefully addressed the most common fears about the Lasik procedure. For anyone that might gain a better life quality with improved vision, please visit your local Lasik clinic and discuss the procedure in detail with the professionals there.