Potential complications
After Lasik / PRK

The most common complication from refractive surgery is {the} incidence of "dry eyes." According to an American Journal of Ophthalmology study of March 2006, {the} incidence rate of dry eyes from LASIK after {the} six month post operative healing period was 36%. The FDA (Food and Drugs Administration) website states that "dry eyes" might be permanent.

The high incidence of dry eyes necessitates a proper preoperative and post operative evaluation and treatment for dry eyes. There are a number of successful treatments for dry eyes including artificial tears, prescription tears and punctal occlusion. Punctal occlusion is accomplished by placing a collagen plug in {the} natural drain of {the} eye. Dry eyes, if left untreated can compromise {the} visual outcome and result in regression of {the} effect of LASIK or PRK, or in severe cases result in "chronic dry eye" where permanent chronic pain and visual impairment is a possible outcome. It also must be noted that some incidences of dry eye cannot be successfully mitigated using {the} above mentioned techniques, so a potential lasik patient must consider that dry eye can be a permanent outcome and un-treatable.

The risk for a patient of suffering from disturbing visual side effects such as halos, double vision (ghosting), loss of contrast sensitivity (foggy vision) and glare after LASIK depends on {the} degree of ametropia before {the} laser eye surgery and other risk factors.[37] For this reason, it is important to take into account {the} individual risk potential of a patient and not just {the} average probability for all patients.[38] The following are some of {the} more often reported complications of LASIK:[39][40]

  • Surgery induced dry eyes
  • Overcorrection[41] or undercorrection
  • Very Low level vitamin D - Sun sensitivity
  • Visual acuity fluctuation
  • Halos[42] or starbursts[43] around light sources at night
  • Light sensitivity
  • Ghost images[44] or double vision
  • Wrinkles in flap (striae)[45]
  • Decentered ablation
  • Debris or growth under flap
  • Thin or buttonhole flap [46]
  • Induced astigmatism
  • Corneal Ectasia
  • Floaters
  • Epithelium erosion
  • Posterior vitreous detachment[47]
  • Macular hole



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