Abstract
Keratoconus is the most common corneal ectasia and, in part of the patients, it causes low visual acuity. Low visual acuity can be of many different levels, from mild problems to complete disability. Optical visual correction has different non cirurgical estrategies such glasses and contact lenses and cirurgical ones such Intrastromal corneal ring implantation and penetrating keratoplasty. In addition to optical treatment, cross-linked therapy may also be necessary to stabilize disease progression.
Considering the similarity in corneal and tear refractive indexes, the anterior and posterior surfaces of the contact lenses can determine the angle of light entering the eye, mainly eliminating irregular deviations from the air/tear interface that occurs in keratoconus and other corneal deformities, giving the patient all its vision potential.
In this chapter, we try to show the best solutions, in an orderly manner, facilitating the search and considering the various materials and drawings available, with the aim of assisting the patient safely and efficiently.
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Formentin, L., Leal, F.M. (2022). Contact Lenses in Keratoconus: Possibilities and Flowchart. In: Almodin, E., Nassaralla, B.A., Sandes, J. (eds) Keratoconus . Springer, Cham. https://doi.org/10.1007/978-3-030-85361-7_22
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DOI: https://doi.org/10.1007/978-3-030-85361-7_22
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