Femtosecond Laser Assisted Surgery
The revolutionary introduction of the Excimer Laser, developed in the 1990s as a new ophthalmological technique to treat the refractive defects of the cornea, has helped eliminate myopia, hyperopia, astigmatism and later on presbyopia itself.
With the introduction of lasers, refractive surgery abroad has been demanded increasingly.
Today, the Femtosecond Laser provides new exciting options in the field.
Refractive Surgery, Femto Laser
This new technique is using highly precise infrared source (femtosecond means a 1/1000 picosecond) emitted when a titanium-sapphire crystal is stimulated by an infrared light. The ultra-high-intensity red light produced is pulsed at the rate of a one millionth of a billionth of a second. One of the major benefits of the procedure lies in its reversibility.
Actually, there are no cuts during the surgery, as all tissues are detached by a low dose energy laser and links existing between the cells are being disconnected. The technique is highly precise, which is another of its particular features. It does not cut nor does it heats up the adjacent cells.
Every laser impulse splits particular molecules links very precisely and silently, without affecting or heating up the adjacent ones. Femtosecond laser can also be programmed to determine with micrometric precision the depth of the incisions, as never before.
This computer connected laser performs micro-cuts that have been previously designed by the surgeons, ensuring thus a quicker, more secure and precise surgery since it has less to do with the ophthalmologist’s personal skills.
Refractive surgery of the cornea uses femtosecond laser for “flap” creation mainly where the substitution of the microkeratome is performed using the highly precise and secure Lasik technique.
No cuts are needed and this particular “flap” creation ability is used by the refractive surgeons to treat myopia, hyperopia, astigmatism and presbyopia. It has even been used quite recently to perform corneal transplants or to correct corneal defects.
Since 2012, it is also employed in some very highly precise cataract surgeries when special lenses need by implanted to correct presbyopia, or when some additional corneal cuts are necessary after the performance of a cataract surgery to prevent or reduce astigmatism.
The introduction of this laser to conduct cataract surgeries is quite revolutionary because it provides significant advantages and because it means a qualitative improvement as regards to the ultrasound phacoemulsification technique used since 1990.
Even though, during the last few years, the traditional phacoemulsification has progressed greatly, with smaller incisions and a more efficient control over the energy delivered, the technique is still performed by a surgeon and thus depending on his personal expertise.
The new Femtosecond cataract surgery technique replaces the capsulorhexis by a nearly perfect capsulotomy, which ensures a precise and perfect circular extraction of the capsule and reinforces the resistance of the capsule edges before the surgeon can introduce the artificial lens to replace the former natural one. The procedure secures the artificial lens into a more centered and adjusted place, providing better refractive results.
The new laser cataract technique allows more precise and softer cuts; post operative infections risks are reduced; it enables better intraocular lens placement and helps correct post operative cataract astigmatism. The overall refractive improvements provided by the femtosecond are therefore more positive since they show that it is safer in all aspects than the classic technique and that the post surgical results are more standardized.
The new laser is believed to increase, from a current 50% to an 80% in the near future, the efficiency of specific implanted lenses for presbyopia during a cataract surgery.
The Femtosecond Laser system guarantees quick surgeries performed in about 10 to 15 minutes (except the corneal transplants and the Keratoconus treatments which take longer). All these surgeries are painless, ambulatory techniques performed under local anesthesia.
The Fetmo laser is the best technology for patients of refractive surgery abroad.