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Study: Method of flap creation doesn't affect LASIK visual outcomes
Aug 8, 2007
Everyone wants to see well after LASIK surgery. LASIK candidates and surgeons alike are interested in determining which surgical tools and techniques provide the best visual outcomes.
There's been much discussion regarding whether patients see better after an "all-laser" LASIK experience, where the corneal flap is created with an IntraLase femtosecond (FS) laser, or when they have a traditional LASIK procedure where the flap is created with a bladed, or "mechanical," microkeratome.
According to a recent Mayo Clinic College of Medicine study, there's no significant difference.
Study design
Twenty-one (21) patients received LASIK for myopia or myopic astigmatism, with one eye having the corneal flap created with an IntraLase FS laser (IntraLase Corp.) and the other eye having the flap created with a mechanical microkeratome (model: Bausch & Lomb Hansatome).
The patients were examined at 1, 3, and 6 months after surgery. Key measurements included: corneal haze (backscattered light), visual acuity, and contrast sensitivity. At the 3-month visit, patients were also asked which eye was seeing better (compared to the other).
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Results
There were no significant differences in visual acuity or contrast sensitivity between laser-flap eyes and the microkeratome-flap eyes at any of the post-operative exams.
Corneal haze was 6% greater in the laser-flap eyes at one month after surgery, but it did not produce a perceptible change in vision. There was no difference in corneal haze between the laser-flap eyes and the microkeratome-flap eyes at 3 months or 6 months after surgery.
When asked which eye was seeing better at 3 months after surgery:
5 patients preferred the laser-flap eye.
7 patients preferred the microkeratome-flap eye.
9 patients had no preference.
Conclusions
The researchers concluded that the method of flap creation during LASIK surgery did not affect visual outcomes during the first 6 months after surgery.
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What Happens After The Lasik Procedure?
... will seem a remarkably short time to have a permanent change to your vision, and in this regard Lasik seems almost too good to be true. In addition, most Lasik patients notice improved vision immediately or within a few hours after the Lasik procedure has been performed. This does not mean that you should ...
Source : http://www.readabouthealth.com/lasik/even_a_chicken_can_get_lasik_surgery.html
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