Understanding how LASIK works starts with the cornea, the clear front surface of your eye. LASIK reshapes this tissue with a laser so that light focuses more accurately on the retina, helping reduce your dependence on glasses or contact lenses.
For patients in Lubbock, knowing what happens during surgery can make the decision feel less unfamiliar. At West Texas Eye Associates, the process begins with an evaluation of your eyes, prescription, and visual goals.
Here is how LASIK changes your vision, what happens during each step, and what to expect afterward.
How Corneal Shape Affects Your Vision
Your cornea and the natural lens inside your eye bend incoming light toward the retina, the light-sensitive tissue at the back of the eye. When light is not focused properly, objects appear blurry.
The way light focuses determines the type of refractive error:
| Refractive Error | How Light Focuses |
| Nearsightedness, or myopia | Light focuses in front of the retina, causing distant objects to appear blurry. |
| Farsightedness, or hyperopia | Light would focus behind the retina when the eye is relaxed, which can affect near and sometimes distance vision. |
| Astigmatism | Uneven curvature creates multiple focal points, causing blurred or distorted vision. |
Glasses and contacts redirect light before it reaches the eye. LASIK changes the cornea’s focusing power by removing microscopic amounts of tissue in a planned pattern.
The U.S. Food and Drug Administration explains how LASIK reshapes the cornea to correct refractive errors. The treatment changes corneal curvature rather than replacing the eye’s natural lens.
Two Lasers With Different Jobs
LASIK stands for laser-assisted in situ keratomileusis. At West Texas Eye Associates, the procedure uses two types of lasers:
- A femtosecond laser creates a thin, hinged flap in the cornea.
- An excimer laser reshapes the tissue beneath that flap.
The first laser provides access to the treatment area. The second changes how the cornea focuses light. Afterward, the surgeon returns the flap to its original position.
This distinction helps explain why creating the flap and correcting the prescription are separate parts of LASIK eye surgery.
The LASIK Procedure Step by Step
Step 1: Measuring Your Eyes and Planning Treatment
Before surgery, your care team measures your prescription and examines your corneal shape, thickness, and overall eye health. These findings help the surgeon determine whether LASIK is suitable and plan the treatment.
Corneal thickness matters because reshaping removes tissue. Your surgeon must assess whether enough tissue can remain after treatment.
The evaluation also considers dry eye, prescription stability, and your expectations. Our guide to what to expect from a LASIK consultation explains this screening process in more detail.
Step 2: Numbing and Positioning Your Eye
On surgery day, the team places numbing drops in your eye and positions you beneath the laser system. You remain awake, although your doctor may offer medication to help you relax.
A small instrument holds your eyelids open. You do not need to keep them open yourself or worry about blinking over the treatment area.
Your surgeon explains where to look and what to expect as treatment proceeds.
Step 3: Creating and Lifting the Flap
The femtosecond laser creates a thin flap with a small hinge that keeps it attached to the cornea. You may feel pressure, and your vision may temporarily dim during this part of the procedure.
The surgeon then lifts the flap to expose the tissue underneath. Your vision will be blurry, so you should not expect to see the procedure in clear detail.
Step 4: Reshaping the Underlying Cornea
The excimer laser removes microscopic amounts of tissue according to your surgical plan. Your prescription and eye measurements determine the treatment pattern.
For nearsightedness, treatment generally flattens the central cornea. Farsightedness makes the central cornea steeper. Astigmatism treatment adjusts the uneven curvature.
This reshaping is the key to how LASIK works: changing the cornea’s curvature changes the way it bends light. Your surgeon monitors treatment throughout.
Step 5: Returning the Flap to Position
Once reshaping is complete, the surgeon carefully repositions the flap. It generally stays in place without stitches.
Protecting your eyes afterward is important. Follow your surgeon’s instructions about eye shields and avoiding rubbing or pressure. If both eyes are scheduled for treatment, the surgeon repeats the procedure on the other eye.
MedlinePlus describes the LASIK procedure, including the planned removal and repositioning of tissue and the flap.
What to Expect During and After Treatment
Numbing drops help keep your eyes comfortable, but you may notice pressure during flap creation. Let the team know if you feel uncomfortable or need reassurance.
LASIK is a brief outpatient procedure. Your total visit includes preparation and checks as well as the treatment itself. Ask the team how much time to allow for your appointment.
Arrange a ride home. Your vision may initially look hazy, and your eyes may water or feel gritty. Clearer vision does not mean healing is complete.
Follow your instructions for:
- Prescribed drops and artificial tears
- Protective eye shields
- Avoiding eye rubbing
- Returning to driving, exercise, and swimming
- Follow-up examinations
Contact your surgeon immediately if you experience severe pain or worsening vision, rather than waiting for a scheduled appointment. The FDA’s LASIK recovery guidance explains these warning signs.
For a broader comparison of recovery times, see LASIK, PRK, and EVO ICL recovery times.
Understanding the Benefits and Limitations
LASIK can reduce the need for glasses or contacts, but results vary. Some people still need corrective lenses for certain activities or require further evaluation for additional treatment.
Dry eye, glare, halos, and difficulty with night vision can occur. Some symptoms improve during healing, while others may persist. Less common complications include infection, flap complications, and vision loss.
The FDA outlines LASIK’s risks and limitations. Your consultation should include a discussion of how those risks apply to your eyes. LASIK also does not stop the natural lens from aging. Even after successful distance correction, you may eventually need reading glasses.
If LASIK does not suit your eyes, the team may discuss other vision correction options, such as PRK or EVO ICL. Each procedure has its own candidacy requirements and tradeoffs.
Explore LASIK in Lubbock
You do not have to decide on surgery before asking questions. A consultation can help you understand your measurements, likely results, and available options.
Request a free vision correction consultation to discuss your goals and determine whether LASIK is right for your eyes and everyday needs.