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Review
. 2014 Jan-Mar;21(1):3-9.
doi: 10.4103/0974-9233.124076.

Intrastromal corneal ring segments: how successful is the surgical treatment of keratoconus?

Jorge L Alio  1 , Alfredo Vega-Estrada  1 , Santiago Esperanza  1 , Rafael I Barraquer  2 , Miguel A Teus  3 , Joaquim Murta  4
Affiliations
Review

Intrastromal corneal ring segments: how successful is the surgical treatment of keratoconus?

Jorge L Alio et al. Middle East Afr J Ophthalmol. 2014 Jan-Mar.

Abstract

This review evaluates the outcomes of intrastromal corneal ring segment (ICRS) implantation for the treatment of keratoconus considering a new grading system based on the preoperative visual impairment of the patient. Additionally, a five-year follow-up analysis of patients with stable and progressive keratoconus is performed in order to assess the long term stability of the surgical procedure. Corrected distance visual acuity decreased statistically significantly in patients with mild keratoconus (P < 0.01) but statistically significantly increased in all other grades (P < 0.05). The improvement in visual acuity and the decrease of keratometric and aberrometric values were stable throughout a long period of time in patients with stable keratoconus. In patients with progressive form keratoconus, a significant improvement was found immediately after the procedure, however clinically relevant regression greater than 3 D was observed at the end of the follow up period.

Keywords: Intracorneal Ring Segments; Keratoconus; Keratoconus Treatment.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
Mean keratometry reading changes five years after intrastromal corneal ring segment (ICRS) implantation in keratoconic patients with the stable form of the disease
Figure 2
Figure 2
Mean keratometry reading changes five years after intrastromal corneal ring segment (ICRS) implantation in keratoconic patients with the progressive form of the disease
See this image and copyright information in PMC

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