LASIK Power Correction
Overview
The clear cornea, like a prism, bends light. Light images focus onto the retina. Normal focus is sharp and clear. With myopia, distant objects focus in front of the retina. Nearsightedness is due to a steep cornea or a longer eye.
The LASIK Procedure
LASIK treatment is performed under a thin corneal flap. A guided microkeratome blade or femtosecond laser may be used to create the thin corneal flap by delaminating the cornea, after which the flap is gently folded back.
For treatment of myopia, the laser flattens the cornea before the thin corneal flap is returned to position.
Without tracking, eye movements during laser surgery can affect accuracy. With tracking, sensors monitor eye movements and the laser matches them. The resulting treatment pattern precisely matches the desired vision correction.
The cornea focuses light onto the retina. Wavefront scanning reflects light off the retina and back through the cornea to create a precise 3D scan map of the eye.
All corneas have small curvature variations called higher order aberrations. The wavefront scan map guides the laser to treat these variations, providing a superior overall visual result.
Summary
Advances in medical technology have made vision correction a relatively safe, fast, and effective elective procedure. Procedures shown are specific for certain surgical candidates. Refractive surgeries can have side effects and complications. Any changes to your vision should be brought to your eye care provider’s attention immediately. Surgical correction of vision, as with all surgeries, does contain an element of risk, which must be fully considered, and discussed with your eye care provider.
Contact Us
If you have any other questions or concerns, please contact us at:
Dr. Swati Agarwal - The Eye Clinic
2A Motilal Basak Lane, Kankurgachi, Kolkata, WB 700054
www.swatiagarwal.in | +91 9147714355
[email protected]
Important Note: This information is provided for general educational concepts only. Your specific circumstances, conditions, treatment approaches, and results may vary from those shown here. Additional information, instructions, and precautions are to be provided by and discussed with your eye care provider.
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