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Bladeless LASIK Eye Surgery Kayla Walker BME 181 What is LASIK Surgery? Laser-assisted in situ keratomileusis LASIK is a type of refractive eye surgery to reduce or eliminate the need for glasses or contacts. How does LASIK works?

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Bladeless lasik eye surgery l.jpg

Bladeless LASIK Eye Surgery

Kayla Walker

BME 181


What is lasik surgery l.jpg
What is LASIK Surgery?

  • Laser-assisted in situ keratomileusis

  • LASIK is a type of refractive eye surgery to reduce or eliminate the

    need for glasses or

    contacts.


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How does LASIK works?

  • Using a laser, the surgeon will make a thin, circular flap in the eye. Then using

    a different laser which is

    positioned above the eye

    to reshape the cornea,

    improving vision.


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What does LASIK correct?

  • Myopia – (nearsightedness) the eye focuses incorrectly making distant object appear blurry.

  • Hyperopia – (farsightedness) the eye focuses behind the retina rather then directly on it.

  • Astigmatism – an eye disorder where the eye is abnormally curved causing out-of-focus vision.


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Before Surgery

  • An eye exam will be performed to determine if the eyes are healthy enough for the surgery, what kind or correction is needed and how much laser ablation is required.

  • A measurement of the curvature of the eye and a “map” of the cornea is done using a corneal topographer.

  • Patients may also undergo a wavefront analysis. Light waves are sent through the eye to provide an even more precise map of the aberrations affecting vision.


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Surgery

  • Numbing eye drops will be applied to the eyes so there is no discomfort during the procedure.

  • The patient will be laying down and one at a time an eye will be positioned under the laser. A retainer is places under the eye lids to keep them open.

  • Before using the laser, the surgeon will use an ink marker to mark the cornea. Then using a femtosecond laser, which is securely attached to the cornea using a suction ring to prevent eye movement, to make a flap in the cornea.


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Surgery Continued

  • The surgeon will then position an excimer laser above the eye, programmed for the prescription.

  • The patient will then need to look at the target light while the surgeon watches through a microscope as the laser sends pulses to the cornea

  • After the first eye is complete most people continue on with the procedure and get the second eye done immediately after the first one. Some people wait a week to get the second eye done.


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After Surgery

  • The patient must be rest for a little bit then they will be able to go home. Someone else must drive them home.

  • After a few days rest, most people go back to work or school. Strenuous exercise must be avoided for a week.

  • Patients must also avoid rubbing eyes because there is a slim chance they might dislodge the corneal flap.

  • Patients must continue to be careful touching their eyes as it takes about three months to fully heal.


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Benefits of LASIK Surgery

  • Speedy Results

    • Ambulatory procedure

    • Surgery on each eye only takes a few minutes.

    • Within days, patients see results.

  • Freedom from Eyewear

    • After surgery most people achieve 20/20 vision.

    • Glasses & contacts are not needed for daily life.

  • Future Expenses Avoided

    • LASIK vision improvement is permanent.

    • No need for new glasses or prescription updates.


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References

  • www.allaboutvision.com/visionsurgery/lasik.htm

  • www.the-lasik-directory.com/benefits_risks.html

  • en.wikipedia.org/wiki/LASIK

  • www.torontolasiksurgery.com


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