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The most common conditions that cause low vision are myopia, astigmatism and hyperopia, these prevent planning and executing tasks of daily life
Dr. Bueno: “In the care of visual health, prevention is better than regret. For this reason, awareness and information are key to attend and preserve the health of our grandparents, who are a source of experience and knowledge ”.
Refractive surgery is a set of surgical procedures that modify the anatomy of the eye, especially the cornea, permanently eliminating the refractive errors of myopia, hyperopia and astigmatism so that the use of glasses or contact lenses is not necessary.
LASIK (acronym for Laser-Assisted in Situ Keratomileusis)
It is one of the most used techniques for the correction of spherocylindrical ametropia with laser. Due to its safety and reproducibility, it has been a true revolution in modern ophthalmology since its appearance in 1990. The desired effect is achieved by shaping the anterior surface of the cornea using excimer laser ablation.
LASEK is a surgical technique used in ophthalmology to permanently correct refractive errors of the eye, using lasers. Myopia, hyperopia, and astigmatism can be treated with this procedure.
It is a variation of the LASIK technique. It consists of creating an epithelial flap of the cornea, for which a special alcoholic solution is applied, then the excimer laser is used to ablate the corneal tissue that must be removed to correct the refractive error. The corneal epithelial flap is then returned to its original position and an external protective lens is placed for a few days.
PKR (acronym for Photorefractive keratectomy)
It is a surgical procedure that uses lasers to treat refractive errors of the eye, such as myopia and hyperopia. Currently, other techniques that also use lasers, such as LASIK, are the most used for this purpose.
PRK is performed with an excimer laser, which uses a cold ultraviolet beam to precisely remove (“ablate”) very tiny pieces of tissue from the surface of the cornea in order to reshape it for clear vision without glasses or lenses. contact. By reshaping the cornea appropriately, it works to better focus light on the eye and retina, providing clearer vision than before. People with problems of myopia, astigmatism and hyperopia can benefit from PRK. In patients with myopia, the goal is to flatten the cornea that is too steep. Likewise, the excimer laser can correct astigmatism, by flattening the irregular cornea in a more normal way.
Refractive surgery with lens implant.
Implant-refractive and facorefractive surgery has the purpose, like Excimer Laser surgery, to eliminate dependence on lenses. The indication of one or another technique (laser or intraocular lenses) is based on the data obtained in the preoperative study. Thus, a patient whose corneas are not suitable, or with a high number of diopters that contraindicate laser refractive surgery could be operated on with a phakic lens implant (ICL, toric ICL or Acrisof Caché) or pseudophakic (monofocal, toric monofocal or multifocal) depending on the characteristics of the eye, age, the presence of cataracts, the existence of presbyopia, etc …
For patients with Keratoconus, it is also known as intracorneal rings, keraring, ferrara rings or intacs. It is a device composed of two semi-circular segments, of variable thickness, 5 mm in diameter, made of Perspex CQ Acrilic, which is the same material used for more than 20 years in the manufacture of intraocular lenses.
Corneal rings are perfectly tolerated by the body, the risk of rejection is minimal. And if necessary, they can be removed and the cornea will return to its original dimensions.
It is the only process capable of generating new unions or bridges between the corneal collagen fibers to significantly increase the rigidity of the cornea. Cross-linking is a new method to treat Keratoconus and consists of producing new molecular bonds to reinforce the corneal collagen that is weakened in this disease. It is an excellent therapeutic alternative with very good results and minimal side effects.