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Título del libro: Astigmatism: Types, Diagnosis And Treatment Options
Título del capítulo: Irregular astigmatism management

Autores UNAM:
ALEJANDRO NAVAS PEREZ; ENRIQUE OCTAVIO GRAUE HERNANDEZ;
Autores externos:

Idioma:

Año de publicación:
2014
Resumen:

The term irregular astigmatism is often applied to a distorted corneal topography, whereby two major meridians may not even be easily identified; in simple terms, it can be defined as an "unrefractable" eye. As a consequence, visual function can be severely affected. Conventional treatments are often insufficient and/or unsatisfactory. Spectacles may lead to intolerable aniseikonia, and contact lens fitting is usually challenging. Conservative approaches do not always yield maximal visual results leaving the patient unsatisfied. Numerous surgical procedures have been developed trying to improve astigmatism, including relaxing incisions, thermal and conductive keratoplasty, wedge resections, photorefractive procedures, phakic and intraocular lens implantation, among others. Each procedure needs to be evaluated within the patient's context and chosen accordingly. The purpose of this chapter is to review the most commonly used techniques for the correction of irregular astigmatism. © 2014 by Nova Science Publishers, Inc. All rights reserved.


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