Custom, or Wavefront guided laser eye surgery, is the latest development in the evolution of LASIK surgical techniques. Customized vision procedures have become a very popular form of vision correction and are a viable option for more and more of the population. Glasses and contact lenses are still commonly used and probably always will be. But advances in surgical procedures and products have taken significant strides over the past decade. However, Wavefront guided laser eye surgery is not the cure-all of vision problems. The procedure will not produce super vision, but it is capable of producing better than 20/20 vision when reading as determined by reading a typical examination chart. Although laser procedures have grown in popularity since about 1995, there are several risks involved and some people are excluded from using them for a variety of reasons. Today, there are about a dozen possible surgical procedures used to correct vision problems, but two are more commonly used than the others: Photorefractive Keratotomy (RK) and Laser-Assisted in situ Keratomileusis (LASIK).
Essentially, Wavefront guided laser eye surgery customizes the surgical procedure to an individual's unique vision requirements. Today, LASIK is more commonly performed than Photorefractive Keratotomy. According to online sources, the two techniques basically produce the same results. However, because of the differences in how the outcome is produced LASIK has more possible risks of complications. Both of the procedures involve reshaping the surface of eye to produce clearer vision. Photorefractive Keratectomy uses light energy to remove tissue directly from the surface of the cornea. This procedure alters the curvature of the cornea. In 1995 the Food and Drug Administration approved the use of PRK in the United States. But PRK has been upstaged by LASIK. However, PRK does have some advantages. Since nerves appear to regenerate faster with PRK, there is less risk of some complications developing. The main differences between the two procedures are that Keratectomy is a surface procedure and LASIK involves creating a small thin surgical flap.
During the Wavefront guided laser eye surgery procedure, the surgeon lifts the surface flap and then uses light energy to reshape the surface of the cornea. Once this is done, the flap is replaced. Unfortunately, there are two possible risks with creating a flap. First, the flap could be damaged or detach completely. Second, improper healing of the flap could distort the cornea. However, there are other complications that could arise during and after the medical procedure. Apparently, LASIK's main advantage is that there is little discomfort following the procedure. Also, unlike PRK, the patient's vision clears within hours instead of days. During the past decade, several forms of LASIK have been developed: LASEK, EPI-LASIK, Blade-free LASIK and Wavefront LASIK. Generally, the main difference in the techniques is how the flap is created. Many experts consider Wavefront guided laser eye surgery to be the most accurate vision correction system to date. Traditional LASIK procedures use measurements derived from information gathered from a typical eye examination designed to fit a person for glasses or contacts. But Wavefront assisted procedures are based on distortion or visual errors found in the eye itself.
Essentially, the Wavefront guided laser eye surgery system uses a beam of light that creates a three-dimensional map of how the eye processes images. This map then guides a beam of light energy in re-shaping the cornea. Initially, a surgeon will transmit a light ray into the eye. The light reflects off of the retina and comes back out through the pupil. On the way back out from the retina, the ray of light records any irregularities. A unique map is what makes custom laser eye surgery specific to each individual. According to one website, the irregularities are called lower or higher-order aberrations. According to the same Wavefront guided laser eye surgery website, vision is based not only on how much a person sees but also on how well a person sees. How much a person can see is affected by lower-order aberrations. These vision errors are such defects as astigmatism and myopia. Higher-order aberrations reduce how well a person can see. These types of disorders are such problems as decreased contrast sensitivity, night vision, glare, and halos. Obviously, light helps people see more clearly. Christians know that light is also an important theme found throughout the Bible. Light is life and is the foundation of one of the single most significant verses in the New Testament: "Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life. (John 8: 12)
Traditional LASIK procedures correct lower-order aberrations. But Wavefront guided laser eye surgery can correct both lower and higher aberrations. Although laser eye surgery procedures have grown in popularity, they are not right for everybody. Consult with a surgeon to find out which procedure, if any, is the best one. In most circumstances, people under the age of 18 are rarely considered for LASIK procedures because their eyes are still changing. Certain health conditions and diseases could preclude a person from some types of vision correction procedures, too. Most LASIK procedures are performed quickly and without pain. During the procedure, the eye is anesthetized using drops and there is often no discomfort during the procedure, which normally takes 15 to 45 seconds to perform. Apparently, few side effects are experienced following LASIK. Sources indicate that the most common side effects are a halo and glare around lights. However, most people usually return to normal activities within a few days of undergoing a new laser procedure.
Essentially, Wavefront guided laser eye surgery customizes the surgical procedure to an individual's unique vision requirements. Today, LASIK is more commonly performed than Photorefractive Keratotomy. According to online sources, the two techniques basically produce the same results. However, because of the differences in how the outcome is produced LASIK has more possible risks of complications. Both of the procedures involve reshaping the surface of eye to produce clearer vision. Photorefractive Keratectomy uses light energy to remove tissue directly from the surface of the cornea. This procedure alters the curvature of the cornea. In 1995 the Food and Drug Administration approved the use of PRK in the United States. But PRK has been upstaged by LASIK. However, PRK does have some advantages. Since nerves appear to regenerate faster with PRK, there is less risk of some complications developing. The main differences between the two procedures are that Keratectomy is a surface procedure and LASIK involves creating a small thin surgical flap.
During the Wavefront guided laser eye surgery procedure, the surgeon lifts the surface flap and then uses light energy to reshape the surface of the cornea. Once this is done, the flap is replaced. Unfortunately, there are two possible risks with creating a flap. First, the flap could be damaged or detach completely. Second, improper healing of the flap could distort the cornea. However, there are other complications that could arise during and after the medical procedure. Apparently, LASIK's main advantage is that there is little discomfort following the procedure. Also, unlike PRK, the patient's vision clears within hours instead of days. During the past decade, several forms of LASIK have been developed: LASEK, EPI-LASIK, Blade-free LASIK and Wavefront LASIK. Generally, the main difference in the techniques is how the flap is created. Many experts consider Wavefront guided laser eye surgery to be the most accurate vision correction system to date. Traditional LASIK procedures use measurements derived from information gathered from a typical eye examination designed to fit a person for glasses or contacts. But Wavefront assisted procedures are based on distortion or visual errors found in the eye itself.
Essentially, the Wavefront guided laser eye surgery system uses a beam of light that creates a three-dimensional map of how the eye processes images. This map then guides a beam of light energy in re-shaping the cornea. Initially, a surgeon will transmit a light ray into the eye. The light reflects off of the retina and comes back out through the pupil. On the way back out from the retina, the ray of light records any irregularities. A unique map is what makes custom laser eye surgery specific to each individual. According to one website, the irregularities are called lower or higher-order aberrations. According to the same Wavefront guided laser eye surgery website, vision is based not only on how much a person sees but also on how well a person sees. How much a person can see is affected by lower-order aberrations. These vision errors are such defects as astigmatism and myopia. Higher-order aberrations reduce how well a person can see. These types of disorders are such problems as decreased contrast sensitivity, night vision, glare, and halos. Obviously, light helps people see more clearly. Christians know that light is also an important theme found throughout the Bible. Light is life and is the foundation of one of the single most significant verses in the New Testament: "Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life. (John 8: 12)
Traditional LASIK procedures correct lower-order aberrations. But Wavefront guided laser eye surgery can correct both lower and higher aberrations. Although laser eye surgery procedures have grown in popularity, they are not right for everybody. Consult with a surgeon to find out which procedure, if any, is the best one. In most circumstances, people under the age of 18 are rarely considered for LASIK procedures because their eyes are still changing. Certain health conditions and diseases could preclude a person from some types of vision correction procedures, too. Most LASIK procedures are performed quickly and without pain. During the procedure, the eye is anesthetized using drops and there is often no discomfort during the procedure, which normally takes 15 to 45 seconds to perform. Apparently, few side effects are experienced following LASIK. Sources indicate that the most common side effects are a halo and glare around lights. However, most people usually return to normal activities within a few days of undergoing a new laser procedure.
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