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Lasik Laser

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Last Updated: 23 September 2020

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General | Latest Info

Lasik stands for Laser in Situ Keratomileusis, which means using a laser underneath the corneal flap to reshape the cornea. This procedure utilizes highly specialized laser design to treat refractive errors, improve vision, and reduce or eliminate the need for glasses or contact lenses. This laser procedure alters the shape of the cornea, which is the transparent front covering of the eye. Though excimer Laser had been used for many years before, development of LASIK is generally credited to Ioannis Pallikaris from Greece around 1991. In the human eye, front surface and lens inside the eye form the eye's focusing system and are primarily responsible for focusing incoming light rays onto the surface of the retina, much like lenses of camera focus light onto film. In a perfect optical system, power of cornea and lens are perfectly match with length of eye and images are in focus; any mismatch in this system is called refractive error, and the result is blurred image at some location. During our youth, natural lens have the ability to change shape and power. This allows the US to focus on close objects through a process of lens power change called accommodation. As we age, natural lens become stiffer and lose the ability to change shape. This is the term presbyopia, which is loss of accommodation, and the need for reading glasses, bifocals, or other visual aids to facilitate near work. Lasik cannot directly fix accommodation, but there are a variety of strategies that can be successful, including blend vision or monovision, in which one eye is correct for better distance vision and one eye is correct for better near vision. Wavefront - optimized LASIK is a type of Laser Eye surgery available on Wavelight Laser. This treatment is also based on the patient's glasses prescription, but also takes into account corneal curvature and thickness, and applies Laser energy in a unique fashion in periphery of the cornea. This Laser has been found to reduce aforementioned complications such as glare, halos, and other nighttime visual aberrations that can occasionally occur with conventional treatments. Other types of refractive surgery are available and may be more appropriate than LASIK for certain individuals. Advance surface ablation: There are a variety of other techniques that utilize excimer Laser to reshape cornea in much the same way as LASIK, but without creation of corneal flap. These are generically term advanced surface ablation and include photorefractive keratectomy, Laser subepithelial Keratomileusis, and epipolis Laser in Situ Keratomileusis. All of these techniques involve first removing the most superficial corneal layer and then performing excimer Laser ablation. Phakic intraocular lenses: For patients with extreme myopia, LASIK and advanced surface ablation are not reasonable options. In these cases, phakic intraocular lens may be used. This lens is implanted inside the eye and can effectively treat nearsightedness up to - 20 diopters.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Continued

Complications relating to laser vision correction procedures are uncommon, especially after the initial postoperative period. Very rarely, trauma, such as pet scratching patients Cornea, may cause LASIK flap to be moved and require repositioning. Corneal abrasion may require treatment and a course of topical steroids to prevent inflammation. Chronic conditions, such as dry eye, may cause foreign body sensation, tearing, fluctuating vision and haloes at night. Most often, proper treatment with doctor - providing eye drops will help restore optimal vision. Lasik does cause temporary reduction in tear production, side effect that is usually bothersome for two to four weeks at most. Normal tear production levels return by six months after procedure. Lasik patients with preoperative dry eye will, of course, continue to have condition and require appropriate care.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Vision changes after LASIK

How often have you hear post - LASIK patient say his surgery isnt working anymore or it has expire? While corneal tissue that was ablated is go forever, eyes can change over time, and laser Vision correction does not stop time. There are many reasons why eyes change after laser vision correction. The vast majority of patients treated with excimer laser have stable distance vision. 1 study published in Journal of Refractive Surgery analyzing 4 937 eyes indicated 90. 6 percent of patients still see 20 / 20 binocularly five years after surgery. 2 in early days of laser Vision correction, up to 10 percent of patients need additional surgery after the initial healing period. 3 variety of factors have improved procedure, and the percentage of patients who need enhancement procedure within the first year after surgery can be as low as 1. 4 percent. The 4 patients we will discuss are those who had surgery over one year ago. Percentage of these patients can complain about near vision, distance vision, and fluctuating Vision.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Sources

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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