10 razones para no operarse de cirugia LASIK. Si teneis unos segundos os recomiendo que os leais este texto. En la cirugia refractiva para el paciente su exito se basa en ver bien dejando las gafas pero hay otros factores muy importantes a tener en cuenta. 1. LASIK causes dry eye Dry eye is the most common complication of LASIK. Corneal nerves that are responsible for tear production are severed when the flap is cut. Medical studies have shown that these severed nerves never return to normal densities. Symptoms of dry eye include pain, burning, foreign body sensation, and eyelid sticking to the eyeball. The FDA website warns that LASIK-induced dry eye may be permanent. 2. LASIK results in loss of visual quality LASIK patients have more difficulty seeing detail in dim light (known as loss of contrast sensitivity), and also experience an increase in visual distortion at night (multiple images, halos, and starbursts). A review of the clinical trials for FDA approved lasers reveals a significant proportion of patients experience night vision impairment.1 The FDA website warns that patients with large pupils may suffer from debilitating visual symptoms at night. 3. The cornea is incapable of complete wound healing after LASIK Researchers found that the flap heals to only 2.4% of normal tensile strength. LASIK flaps can be surgically lifted or accidentally dislodged for the remainder of a patient’s life. For these reasons, the FDA website warns that patients who participate in contact sports are not good candidates for LASIK. Collagen bands of the cornea provide its form and strength. LASIK severs these collagen bands and thins the cornea, resulting in permanent weakening. The thinner, weaker post-LASIK cornea is more susceptible to forward bulging due to normal intraocular pressure, which may progress to a condition known as keratectasia and corneal failure, requiring corneal transplant. 4. The true rate of LASIK complications is unknown There is no clearinghouse for reporting of LASIK complications. Side effects occur frequently but are downplayed by LASIK surgeons. Moreover, there is no consensus among LASIK surgeons on the definition of a complication. 5. LASIK results in loss of near vision Nearsighted patients who do not have LASIK retain the ability to see up close naturally after the age of 40 simply by removing their glasses. LASIK patients over the age of 40 may discover they have traded one pair of glasses for another. 6. There are long-term negative consequences of LASIK LASIK affects the accuracy of intraocular pressure measurements, exposing patients to risk of vision loss from undiagnosed glaucoma. Like the general population, LASIK patients will develop cataracts. Calculation of intraocular lens power for cataract surgery is inaccurate after LASIK. This may result in poor vision following cataract surgery and exposes patients to increased risk of repeat surgeries. Ironically, steroid drops routinely prescribed after LASIK hasten the onset of cataracts. 7. Bilateral simultaneous LASIK is not in patients’ best interest In a 2003 survey of American Society of Cataract and Refractive Surgery (ASCRS) members, 91% of surgeons who responded did not offer patients the choice of having one eye done at a time. Performing LASIK on both eyes in the same day places patients at risk of vision loss in both eyes, and denies patients informed consent for the second eye. 8. Serious complications may emerge later The medical literature is filled with reports of late onset LASIK complications such as loss of the cornea due to biomechanical instability, vision-threatening infection, inflammation resulting in corneal haze, flap dislocation, and retinal detachment. Complications may emerge weeks, months, or years after “successful” LASIK. 9. Rehabilitation options after LASIK are limited LASIK is irreversible, and treatment options for complications are extremely limited. Hard contact lenses may provide visual improvement if the patient can obtain a good fit and tolerate lenses. The post-LASIK contact lens fitting process can be time consuming, costly and ultimately unsuccessful. Many patients eventually give up on hard contacts and struggle to function with impaired vision. In extreme cases, a corneal transplant is the last resort and does not always result in improved vision. 10. Safer alternatives to LASIK exist Some leading surgeons have already abandoned LASIK for surface treatments, such as PRK, which do not involve cutting a corneal flap. It is important to remember that LASIK is elective surgery. There is no sound medical reason to risk vision loss from unnecessary surgery. Glasses and contact lenses are the safest alternatives.
Posted on: Tue, 15 Oct 2013 11:24:42 +0000
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