What is LASIK
The Progression of LASIK
What are the Advantages of LASIK?
The Procedure
What is LASIK?  
Laser In Situ Keratomileusis (LASIK) is a surgical technique which utilize lasers to reshape or change the curvature of the cornea.
Click here to learn more about LASIK and it's advantages.  
The Origins and Progression of lasik  
LASIK had its origins about thirty years ago and was originally developed to treat patients who had very poor vision due to corneal disease. It has now evolved into a successful technique for correcting refractive errors.
The current procedure, done on an outpatient basis, involves both the use of conventional and laser surgery to correct nearsightedness, farsightedness and astigmatism.
LASIK can correct a much higher degree of nearsightedness, with or without astigmatism, than any other refractive procedure, with excellent results (95% of patients achieve 20/40 vision or better).
  The Advantages of Lasik
  Advantages of LASIK include:
  1. Faster healing time than other refractive surgical methods
2. Rapid visual recovery
3. Less risk of scarring
4. Less risk of corneal haze
5. Less post-op discomfort
6. The second eye can be done within a week
7. Treatment of a wider range of nearsightedness
LASIK has become the most common vision correction procedure performed in the United States. The rapid acceptance of LASIK by patients and eye care professionals has been due to the excellent visual results, rapid visual recovery, and the safety of the procedure. Patients are always amazed by the speed and comfort of the LASIK procedure.
Using a precise surgical instrument called a microkeratome, a hinged flap is placed in the top 1/3 of the cornea.
An ultraviolet excimer laser is used to change the shape of the corneal surface and reduce or eliminate the need for spectacles or contact lenses. The lasers used by Dr.Mohamed Hosny have an eye tracking system to improve the safety and success of the procedure.
Over one million LASIK procedures will be performed this year. Dr.Mohamed Hosny has been performing LASIK for years, and has performed thousands of cases. He has been involved in substantial LASIK research.
When performed by Dr.Mohamed Hosny, the entire procedure for both eyes usually takes less than 15 minutes.
Prior to the procedure, the patient is prepped with an anti-microbial solution to the eyelids and corneal surface. Anesthetic drops are instilled to remove discomfort. An eyelid holder is placed to prevent blinking. A suction ring is placed on the surface of the eye. It secures the eye and maintains a constant pressure. While the ring is on the eye, there is a transient loss of vision. Normal vision returns upon removal of the ring.
A microkeratome, a precise automated microsurgical instrument, is attached to the suction ring and is used to create a hinged corneal flap. The flap is approximately 1/3 of the thickness of the cornea. The corneal flap is lifted, and the inner layers of corneal stroma are sculpted with the excimer laser to remove the patient's refractive error (glasses prescription).
Excimer laser can produce remarkably precise changes in the cornea. Each pulse of the laser removes 0.25 microns (39 millionths of an inch!). The entire excimer process usually takes less than a minute because each pulse occurs in 12 billionths of a second. The laser is guided by a sophisticated tracking system to improve the accuracy and safety of the procedure. The corneal flap is then closed and the interface is cleansed.
Once the procedure is completed, the surgeon will wait several minutes to assure that the corneal flap is secure. Once the flap is in position, it remains adherent and the patient can blink normally. The patient is re-examined in the recovery area. The post-operative care is discussed during this evaluation. Patients are placed on antibiotic and anti-inflammatory eye drops during the early convalescence period (post-operative instruction sheet). Preservative-free teardrops are also used to lubricate the eye.
Usually, patients can return to work the next day since visual recovery is quite rapid. Patients are instructed to wear protective eye shields while sleeping to prevent accidental trauma and to avoid rubbing their eyes. Patients can travel in an airplane and resume most exercise activities immediately. Swimming and hot tubs should be avoided for 2 weeks.