In case the astigmatism be mild you may not even need treatment. However, most patients will need to wear glasses or contact lenses to correct the defective vision.

In these cases, the type of lens chosen will be the cylindrical in order to match the two focal lines in a single point. If astigmatism is added, as in many cases, some other refractive defect such as myopia or hyperopia, a concave or convex lens, respectively, should be added.

In cases of irregular astigmatism, the correction of the defect will probably require intervention. The choice of the most widespread techniques at present will depend on each case. Today, the most commonly used are corneal incisions, the implantation of toric intraocular lenses and the Excimer laser, the latter being the least invasive and whose results are more predictable and stable.

The operation for the treatment of astigmatism It consists of modifying the curvature of the cornea using a technique known as LASIK (acronym of its name in English: Laser-Assisted in Situ Keratomileusis). This method, which consists of modeling the corneal bed with excimer laser, is fast (it only lasts a few minutes) and is performed under local anesthesia, although it is more expensive and since it involves surgery, it involves certain risks.

In some patients, whose astigmatism is associated with other conditions of the cornea such as keratoconus (a defect of the corneal tissue that causes the cornea to acquire a conical shape), the use of this type of surgery is contraindicated. For these cases, a surgical intervention will be advised to implant intraocular lenses or make corneal incisions.

Astigmatism Explained (November 2019).