Presentation on theme: "Bladeless LASIK Eye Surgery Kayla Walker BME 181."— Presentation transcript:
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? 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.
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.
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.
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.
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.
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.
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.