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8416 E. Shea Blvd.,
Scottsdale, Arizona 85260
18275 N. 59th Avenue,
Glendale, Arizona 85308
By reducing or eliminating the need for glasses and contact lenses, LASIK has changed the lives of people around the world. We have the ability to correct myopia (nearsightedness), hyperopia (farsightedness) and astigmatism with a high degree of accuracy. These conditions can occur in combination or alone. (A person can have astigmatism combined with myopia or hyperopia.) LASIK can dramatically improve the vision for most people, but it can not promise perfect 20/20 vision for everyone. The improvement you experience depends on the severity and type of prescription you have.
Myopia is also known as nearsightedness. Myopia occurs when the light rays focus in front of the retina.
The result is that near objects can be seen clearly but far objects appear blurred. The more myopic you are the less clear objects appear at a distance.
Hyperopia is also known as farsightedness. Hyperopia occurs when the light rays focus behind the retina.
The result is that far away objects can be seen clearly but near objects appear blurred. The more hyperopic you are the more difficult it is to focus on near objects.
Astigmatism occurs when the cornea is more oval than spherical. The result is an unequal bending of the light which results in multiple focal points
Astigmatism is very common and occurs to some extent in most eyes. Astigmatism causes blurred vision for both near and far objects.
Presbyopia is part of the normal aging process. At around age 40 the lens starts to lose its elasticity, making it difficult to adjust your focus from distance to near.
Laser vision correction is designed to change the shape of the cornea and does not affect the lens therefore it cannot be used to correct presbyopia.
Technology is currently being investigated to allow us to correct presbyopia, which most people begin to experience between the ages of 42 and 45. In this condition it becomes increasingly difficult to read up close, or within an arm’s length. This is the stage at which glasses must include a bifocal, trifocal or a “graduated” lens.
LASIK or “laser-assisted in-situ keratomileusis” is a procedure performed by using a computerized excimer laser to reshape the cornea. To correct nearsightedness, the curvature of the cornea must be decreased or made flatter. To correct farsightedness, the curvature of the cornea must be increased or made steeper. To correct astigmatism, the curvature must be altered in more than one direction.
An automated surgical device called a microkeratome is used to create a thin flap on the surface of the cornea. The corneal flap is then laid back to expose the under lying layer called the stroma. Excimer lasers use pulses of light, to remove a microscopic layer of stroma according to the prescribed treatment. The laser creates little or no heat, so it causes no harm to the surrounding tissue. Actual laser time depends on the strength of prescription, but on average lasts between 20-30 seconds. The flap is then laid back into it’s original position over the stroma and the healing process begins.
Immediately following the surgery most patients will notice an improvement, but the vision may still be considerably hazy. The day after the surgery most patients can see well enough to drive a car and return to normal activities, including work. Results may vary so please discuss your daily activities or visual needs with your doctor prior to the procedure.
For complete information about what happens on the day of your procedure, please Click Here.
The doctor creates a thin flap on the surface of your cornea which is lifted, but attached at one side.
The excimer laser already programmed to correct the degree of refraction, evaporates microscopic layers of tissue. This part of the procedure typically takes between 20-30 seconds per eye depending on the amount of treatment.
The flap is put back into its original place, and the eyes' natural healing process begins immediately. No stitches are needed.