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Three Different Protocols of Corneal Collagen Crosslinking in Keratoconus: Conventional, Accelerated and Iontophoresis

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Published on: November 12, 2015

[Asymmetric intrastromal corneal ring for the treatment of keratoconus]

Marcelo Alves Vilar de Siqueira¹, Jhonny de Polo, Manuela Benites Gomes

¹Hospital de Olhos do Paraná, Curitiba, PR, Brasil.

Arquivos Brasileiros De Oftalmologia

|January 13, 2011

Abstract

Purpose:

To analyze corneal curvature and visual acuity after asymmetric intrastromal corneal rings implantation, not following the nomogram proposed by the manufacturer.

Methods:

Seven eyes of seven keratoconus patients which had asymmetric corneal rings implanted in their corneal stroma were studied.

Results:

A flattening of the average corneal keratometry was noted in all patients, as well as an increase of the postoperative corneal asymmetry.

Conclusions:

Asymmetric intrastromal corneal ring implant improves the postoperative visual acuity with and without correction. As a result we noticed flattening of the corneal curvature at the thicker ring implantation spot and increase of corneal asymmetry.

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