The aim of intracorneal rings is to modify the refractive power of the cornea. This surgical technique is performed under local anesthesia and consists of introducing, in the corneal thickness, an acrylic plastic implant with the form of a ring to reinforce the structure of the cornea and modify its curvature, respecting the central area.
It is indicated, mainly, in cases of deformity of the cornea associated with poor vision and intolerance to correction with contact lenses and glasses, such as keratoconus, ectasia and irregular astigmatism.
Modern intraocular lenses emulate the refractive qualities of the natural lens so the patient enjoys a better vision after the surgery.
Keratoconus appears when the corneal tissue deteriorates, modifying its usual spherical shape by a cone shape. As the shape of the cornea is altered, the vision becomes distorted.
Refractive surgery aims to correct refractive errors, such as myopia, hyperopia, astigmatism or presbyopia to obtain a good visual quality and to avoid depending on the use of glasses or contact lenses.
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