Lasik and Laser Eye Surgery

Friday, August 15, 2008

Laser surgery for the eyes involves scraping or lifting the cornea and using laser beams to re-shape the tissue beneath it. This has been proven to be effective for astigmatism, near sightedness and far sightedness.

The most common cause of poor vision results from poor refraction of light due to distortions on the surface of the eye. Before each laser surgery for eyes, a doctor uses an aberrometer's laser beams to produce a 3D image of the actual shape of the cornea on a monitor. This helps him find the exact area where re-shaping of tissues should be done.

Intraocular Pressure - The pressure within the eye is determined by how much aqueous fluid is created and drained inside the eye. An increase in intraocular pressure can put pressure on the optic nerve, causing serious vision problems. The intraocular pressure is measured with a tonometer.

Those who suffer from problems with contact lenses and dry eyes need to pay particular attention to the various contact lens products on the market. By comparing brands and manufacturers, the perfect contact lens will be found.If irritation of the eyes continues, the contact lenses should be removed immediately and a health care professional consulted.

There are four different types of eyeglasses available. Reading glasses are worn when working close up. Bifocals are eyeglasses with two points of focus for near vision and distant vision. The top part of bifocal lens is used to correct other eye conditions like myopia or astigmatism while the bottom part is used to correct close up vision.

AcrySof ReSTOR IOL The FDA-approved AcrySof ReSTOR is a breakthrough in intraocular lens technology for most people with cataracts, with or without Presbyopia, that may restore the eyesight of youth. The apodized diffractive optic design gives it the ability to focus light correctly on the retina for images at various distances without mechanical movement of the lens.

Inflammation is a tissue's reaction to trauma often associated with pain, heat, redness, swelling, and/or loss of function. Inflammation may be caused by mechanical trauma,infections, bacteria, viruses, immune reactions or other causes.Ophthalmologist is a medical doctor specializing in the diagnosis and medical or surgical treatment of visual disorders and eye disease.

Legal Blindness - A definition of blindness which enables a person to apply for government disability benefits. It can be either a visual acuity of 20/200 (or worse), with corrective lenses, in the better eye, or tunnel vision in the better eye of 20 degrees in diameter. This level of blindness is severe, but does not necessarily prevent a person from functioning at all.

There are several types of glaucoma, the most frequent one being Open-Angle Glaucoma, which has no obvious symptoms at first. About 15% of glaucoma cases are Closed-Angle Glaucoma, and there are noticeable symptoms, such as nausea, eye pain, blurred vision, and headaches. There is also Normal-Tension Glaucoma, where the intraocular pressure doesn't build up, and no cause has yet been established for this yet, although there are theories.

Verisyse The Verisyse Phakic Intraocular Lens (IOL) implant is recommended for patients who do not qualify for LASIK due to severe nearsightedness, farsightedness, or cases where the cornea is too thin for LASIK.

Alcon LADARVision 4000 and CustomCornea Alcon Surgical’s LADARVision excimer laser system with LADARTracker tracks the eye at a rate of 4,000 times per second - tracking the fastest eye movements with 4x safety margin. Only LADARVision has expanded FDA claims for improved accuracy in corneal shaping.

Patients who have experienced an eye infection or injury in the past year should not undergo LASIK. If you are interested in LASIK, an eye surgeon or ophthalmologist can determine if you are a candidate for the procedure. During a comprehensive eye exam, your ophthalmologist will check your eyes and medical history.

Refractive Error - Too much or too little bending of the light rays entering the eye, so that they focus not on the retina, which would give clear vision, but either in front of it (myopia) or behind it (hyperopia). When the cornea is slightly oval-shaped, rather than perfectly round, it has two curvatures, a steeper one and a flatter one. This also causes refractive error (astigmatism), bending the light rays in two different ways, so that they are skewed and unable to focus. Refractive error is measured in diopters.

Inflammation the body's response to surgery, injury, irritation, infection, or some foreign substances, often associated with pain, heat, redness, swelling, and/or loss of function.FDA is the abbreviation for the Food and Drug Administration. The FDA is the United States government agency responsible for the evaluation and approval of medical devices.

With the advent of lasik technology, eye correction with the use of surgery has become more affordable, more convenient and even painless. The accuracy by which eye surgeons have dealt with real eye problems has been remarkable. Patients have been thrilled with results. What a miracle! They can see! If you’re having both eyes done the same day, the surgeon will probably do the other eye after a short period of time. Dr. Boothe, some people choose to have their second eye done a week later. The doctor may prescribe medication for any postoperative pain, but many people feel no more than mild discomfort after LASIK. That’s one advantage over PRK, which can be quite painful afterward.

A number of laser surgery for the eyes are available to address different forms of vision problems. PRK and LASIK are two of the most common laser surgery for eyes recommended to correct vision problems.

One may experience increased sensitivity to light and some blurring of vision but these are normal and will clear up in a matter of 3-4 days. Doctors often give eye drops or oral medication to prevent infection and to counter some minor side-effects.

Advanced age can also lead to diseases that can seriously undermine vision. This is best exemplified by age related macular degeneration. New and defective blood vessels form networks that prevent normal eyesight. Dr. Boothe, through laser surgery for eyes, these unhealthy blood vessels are removed. Trifocals have three focusing points; one for near vision, one for immediate vision, and one for distant vision. Progressive addition lenses (PALs) uses different focus points but gradually changes them so that no visual sections are as noticeable as in bifocals and trifocals. Bifocal and monovision contacts are also available. In monovision, one eye is corrected for near vision and the other for distant vision.

Through laser surgery for eyes, leaky capillaries, swelling and any build-up of fluids can be removed. This helps on preserving and restoring normal eyesight for these patients.

For these, the application of creams around the area may not simply work. Blurred vision due to conditions like astigmatism, near sightedness and far sightedness can be a burden to a lot of people too. Wearing eyeglasses or being highly dependent on contact lenses can be cumbersome. If you are serious about changing these problems, you might want to try laser cosmetic eye surgery.

Until recently, contact lenses and dry eyes seemed to come hand in hand. Modern technology, however, has developed several ways for contact lens wearers to deal with dry eyes. When eyes become dry, they can be irritable, bloodshot and in severe cases, vision can become impaired.

Having problems with vision and having to wear eyeglasses or contact lenses can be burdensome. Some have problems with constantly losing or breaking glasses and tearing contact lenses. Some find it difficult to look for glasses that perfectly fit the shape of their faces and some feel that it makes them look older. These procedures however, do not correct crow’s feet or wrinkles around the eyes. These may require separate surgical procedures. If you are looking for contact lenses for dry eyes, take some time to review and make a comparison before you select the best contact lenses for your circumstances.

A good candidate for LASIK eye surgery must meet several general requisites. LASIK patients should be at least 18 years old, demonstrate no change in refraction for at least one year, and have realistic expectations regarding the results of LASIK eye surgery.



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