الفهرس 
Simplified Basic KnowledgeOnly 14 pages are availabe for public view
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Abstract
LASIK was introduced in the 1990s with claimed advantages of providing increased diopteric range of surgery, less rehabilitation time, minimal postoperative discomfort, and little postoperative corneal haze than PRK.
About 18 million LASIK procedures have been performed worldwide, with 8 million in the United States alone. However, there are still concerns about the procedure’s safety in the long-term.
Safety of refractive surgery is assessed by BCVA. The refractive procedures are considered safe when the BCVA of the patient unchanged or improved provided that there is no residual short or long term sight threatening complications.
Although the safety and success of LASIK are widely reported, many potential complications can occur after LASIK.
Such complications include all of the potential complications associated with ocular surgery in general such as infection and loss of vision, as well as complications specific to lamellar corneal surgery, such as induced irregular astigmatism and epithelial ingrowth.
These complications have been classified as those that occur preoperatively, intraoperatively, early or late postoperatively. In addition, unusual and vision threatening complications such as macular hemorrhage, and perforated globe may also occur with LASIK.
Knowledge of potential LASIK complications will allow prevention and early detection and management if occurred. This will increase the safety of the operation.
from the previously mentioned studies, although LASIK has some complications, it is considered safe and effective for myopic spherical equivalent up to and over −10 D, 10 years post operatively. However, nowadays, the LASIK surgery is not applied in patients within refractive range of over-10 D and this refractive correction supposes the maximum limit of application of this technique and the results regarding predictability, efficacy, and safety should deserve to be exhaustively analyzed.
The studies showed that LASIK is also safe for hyperopic S.E. up to + 4.10 five years post operatively