FLEx (“femtosecond lenticule extraction”) is an all-laser refractive surgery procedure that was designed for the correction of myopia. The procedure is still new and in its developmental stages and it may be too early to prove as accurate as conventional LASIK.
Most advanced tissue-saving LASIK machines involve just ablating as low as 10 microns of tissue to correct 1 dioptre (100 degrees) of myopia. Such precision is hard to achieve by just pulling off such thin lenticules of corneal tissue instead of lasering off.
Reversibility of this procedure is highly experimental right now, as repositioning such thin tissues back to the eye is highly likely to induce astigmatism or irregularities.
Some Frequently Asked Questions (FAQs)
- What is FLEx?
- Is FLEx more superior than Conventional LASIK?
- Is the procedure 'reversible'?
- How does EEC'ss EagleLASIK Technology compare to FLEx?
- What is FLEx?
FLEx stands for Femtosecond Lenticule Extraction. It is a all-laser refractive surgery procedure designed for the correction myopia. This is currently believed to be a new alternative to conventional Bladeless LASIK.
In FLEx surgery, a femtosecond laser cuts a lens-shaped layer (a lenticule) from within the cornea. The lens is removed through a LASIK type flap, or removed through a small keyhole incision (Smile), done using one laser.
- Is FLEx more superior than Conventional LASIK?
Conventional Bladeless LASIK involves 2 stages – creating a corneal flap with a femtosecond surgical laser, then using an excimer laser to reshape the cornea to treat myopia, hyperopia & astigmatism. The flap is then replaced and allowed to heal.
FLEx is still in its earlier developmental stages so thus it may be too early to compare post outcomes as compared to that for LASIK surgery.
- Is the procedure 'reversible'?
Reversibility of this procedure is highly experimental right now, as repositioning such thin tissues back to the eye is highly likely to induce astigmatism or irregularities. Researchers have not conducted the trials to prove suitability of the re-implantation process for humans so actual success of reversibility cannot be proven as yet.
- How does EEC'ss EagleLASIK Technology compare to FLEx?
At EEC, 2 advanced laser technologies are used for the Bladeless LASIK procedure - the Allegretto Wave by Wavelight & the Ziemer's FEMTO LDV Bladeless Laser.
The FEMTO LDV allows for flap creation and LASIK to be done at the same sitting, meaning that you as a patient, can comfortably lie on one bed without having to move from one machine to another, for the whole procedure. Femtosecond laser allows a more precise creation and evenly shaped cornea flap which gives a more uniform surface for the excimer laser treatment. The pulse energies are low, and the delivery optics are very tightly focused for maximum tissue disruption. This allows a faster healing and visual recovery time than any other technology in the world.
The Allegretto Wave Light laser machine has the distinction of having the fastest laser system in the world that can perform vision correction in the shortest time, reducing risks of inaccuracies from drying up of cornea tissue and providing consistently accurate results. The machine is efficient in using small amounts of cornea tissue to provide maximum amount of correction without damaging adjacent stroma tissue.
At EEC 99% of our LASIK patients of all degrees achieved 6/12 or better vision. Less than 1% of the patients require retreatment.
** EEC performs an average of more than 2000 lasik surgeries a year
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