Laser Eye Surgery For Astigmatism
Because of advances in laser eye surgery for astigmatism, though correction has been available with eyeglasses, contact lenses, or refractive surgery; the laser has brought a whole new dimension to the surgery technique. Astigmatism is a misshapen cornea. The cornea is a clear covering over the front of the eyeball. The normal shape of the cornea is round like a basketball. When the cornea is oblong shaped (like a football), that is abnormal. This shape makes seeing things clearly very difficult. When light rays enter the person's eye, they scatter. For a regular shaped cornea, the light focuses in on a single point; the one the person wants to see. For those with this anomaly, it is quite annoying to have a visual occlusion that distorts vision. This eye condition develops in different shapes and types. With the regular type, the middle points of the vertical and horizontal axis of the cornea at are located 180 degrees from one another. Laser eye surgery for astigmatism could be the solution for this malady. "And Jonadab said unto him, Lay thee down on thy bed, and make thyself sick: and when thy father cometh to see thee, say unto him, I pray thee, let my sister Tamar come, and give me meat, and dress the meat in my sight, that I may see it, and eat it at her hand." (2 Samuel 13:5)
In irregular astigmatism, the two meridians may be located at something other than 180 degrees apart; or more than two meridians are present. Regular astigmatism is generally easy to correct, but irregular astigmatism can be quite complex. In most cases, the irregularities are more difficult to correct. This, of course, depends upon the extent of the irregularity and its cause; in the first place. At times, the aberration is so distorted, that the only answer is surgery. Astigmatism is also known as a refractive aberration or error. Often people end up going in for laser eye surgery for astigmatism, when the symptoms of eyestrain, fatigue, headaches, and blurred vision at all distances are finally diagnosed as eye related. The process necessary to correct the error is to reshape the cornea. With both glasses and contact lenses, this is done by way of a simple mathematical calculation that puts the curve correction into the glass or contact lens. But, laser eye surgery for astigmatism is very exact and permanent fix to this condition.
2,523 children took part in an astigmatism study. This is a common condition in children that often disappears into adulthood. Nearly 1/3 of them suffered undiagnosed. Children are less likely to complain about vision problems, than adults. Blurred or distorted vision may, in fact, be confused for a learning disability or other medical or psychological condition. Because the aberration digresses as adulthood approaches, in some children, this condition is often thought of as developmental. When the condition doesn't go away, that is when a person might be faced with laser eye surgery for astigmatism. For people who were not born with astigmatism, problems often comes from an injury, a surgery or keratoconus. These organs of sight are very delicate. Most people don't consider how fragile they are until something happens to their eyes or to their sight. When people play sports, they are particularly susceptible to accidents involving the eyes. Car accidents, falls, and biking accidents may cause an injury to a person's eyes. Everyone has a flight or fight response that compels them to action when in danger; that includes things like possible injury. People instinctively turn their heads, duck, or cover their heads when something in headed in their direction; that could pose harm. Injury to the eye can cause vision limitations of all types. In particular, injury to the eye can cause the distortion of the cornea.
Another way the cornea can get distorted, if a person was not born with this problem, is surgery on the eyes. Laser eye surgery for astigmatism is then used to correct the problem caused by the surgery. Keratoconus, which causes a gradual thinning and bulging of the cornea. The cornea morphs from a regular round shape into a cone-like shape. When light enters the cornea, headed toward the retina, it is deflected causing distorted vision. One or both eyes can be affected by keratoconus. A person with this eye disorder is not usually a candidate for laser eye surgery for astigmatism. Keratoconus usually develops very so slowly. The person keeps going back to the ophthalmologist and he or she keeps changing the prescription for glasses or contacts. Because keratoconus can be so difficult to detect, it may often be overlooked by the ophthalmologist and may go undiagnosed for a long period of time. As the cornea becomes more cone-shaped, the person notices progressive nearsightedness along with additional problems that cause blurred and distorted vision before the condition is finally diagnosed.
Astigmatism tends to worsen with age. Specialists believe that uneven use of the eyes (such as close up work), a diet the excludes sufficient vitamins and minerals (junk food especially), and heredity play the biggest role in the progression of this eye condition. But, in some cases, there is simply no explanation whatsoever. The great news is, this condition is not fatal. When faced with most eye conditions, a person may have an option of glasses, contact lenses, or surgery. Both glasses and contact lenses can be cumbersome. They are also an ongoing life expense. Laser eye surgery for astigmatism has proven to be a safe and effective solution; and once done, it's done.
Astigmatism Lasik SurgeryUsed to correct irregular corneal curvature, astigmatism lasik surgery successfully restores 20/20 vision in most cases. Laser in-situ keratomileusis, or LASIK, is a complicated but effective procedure for correcting nearsightedness, farsightedness and astigmatism, or blurred vision caused by asymmetrical curvatures in the surface of the cornea. Astigmatism is a common condition which can either be hereditary or develop from poor work habits and posture. People who sit at a desk eight hours a day may develop astigmatism from consistently straining the eyes at the computer. Headaches, fatigue, an inability to focus, and strain are all common symptoms of visual impairment; and a visit to the optometrist is advised. In children, the condition may not be detected until the first eye exam, usually in preparation for entering grade school or pre-Kindergarten.
In people with astigmatism, the cornea is more football shaped than spherical. The cornea is the transparent membrane which covers the surface of the iris and the pupil. It closely resembles a soft contact lense and functions in much the same way. Most corneas have a symmetrical curvature, which enables individuals to wear standard rigid or soft contacts with little difficulty. Astigmatism lasik surgery reshapes the cornea to conform to a more spherical shape, thereby enhancing refraction and vision. LASIK has continued to enjoy popularity as an option to wearing contacts, which can get scratched, cause infections, and may be difficult for some to wear or place properly over the eye. Advanced technology has made the procedure commonplace with many people who prefer not to wear appliances. While some individuals are impaired visually, others are impaired spiritually. Christ is the answer for those who need spiritual healing. "The Spirit of the Lord is upon Me, because He hath anointed Me to preach the gospel to the poor; He hath sent Me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised, To preach the acceptable year of the Lord" (Luke 4:18-19).
Highly skilled eye surgeons that perform astigmatism lasik surgery utilize corneal topography and keratometry to take minuscule measurements of the irregular landscape of an individual's cornea. A digital map of the cornea is then used to plan precise surgical procedures to re-sculpt the underlyng tissue of the membrane and make curvatures more symmetrical. In individuals with astigmatism, nearsightedness or farsightedness, surgeons use a microkeratome to quickly lift and peel back the outer layer of the corneal flap. Underlying tissue is reshaped using precise laser beams and the flap is replaced. In patients with astigmatism, lasers can duplicate images mapped using corneal topography and keratometry to correct blurred vision and irregularities and enable patients to see 20/20. Refractive surgery is highly successful, but most surgeons prefer operating on one eye at a time as a precaution against problems which could permanently impair vision.
While astigmatism lasik surgery is relatively painless, requires no bandages or sutures, and can be performed as an outpatient in a matter of minutes, the greatest benefit is the ability to see without contacts or glasses. LASIK literally turns back the hands of time for older adults or those who develop vision problems as they age. Some adults opt for refractive surgery in order to better perform tedious tasks or compute intricate calculations in front of a computer monitor all day. Vision problems are corrected or enhanced almost instantly; and future adjustments can be made years later as they are needed. Vision enhancement is nearly 100 percent safe and effective; and atients can usually be back at their desk the next day without wearing protective eyewear or contacts.
Although relatively safe and painless, astigmatism lasik surgery can be costly. Typical surgeries run as little as $700 to as much as $2,500 per eye, which might be coct-prohibitive for some individuals. Insurance companies have to be convinced that surgery is a medical necessity; but most deny payment claims and consider LASIK elective. For people whose careers depend on not wearing glasses, such as models, television sportscasters, or anchorpersons, refractive surgery may be considered an occupational necessity. Individuals are also advised to beware of doctors who claim experience in performing delicate and complicated eye surgeries. Surgeons should be Board Certified, have years of documented experience successfully correcting or enhancing vision through laser in-situ keratomileusis, and a list of references and satisfied customers.
Side effects of astigmatism lasik surgery may include poor night driving due to glare, dry eyes, seeing outlines around images, or difficulty focusing. Some patients may still have to wear conventional eyeglasses, especially older adults whose aging vision may prevent lasik surgery from being as effective. Studies indicate that astigmatism lasik surgery may over- or under-compensate for refraction, resulting in less than perfect eyesight. After approximately ten years, refractive surgery may have to be repeated, since procedures are not permanent; however once performed, corrective vision procedures are irreversible.
Candidates for LASIK surgery are individuals that have healthy eyes with no infection, disease, or retinal disorders. Surgeons will do a thorough examination to ensure that individuals meet requirements. Weeks prior to astigmatism lasik surgery, patients may be advised not to wear rigid contacts, as they can easily scratch the cornea or develop infection, making the eyes temporarily inoperable. Soft lenses should not be worn several days prior to procedures for the same reason. Women should refrain from wearing eye makeup or using eye drops not approved by the ophthalmologist. If all goes well, patients should emerge from the doctor's office with 20/20 vision and literally, a new outlook on life!