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[Intacsintracorneal ring segments in keratoconus].

M El-Husseiny¹, T Tsintarakis, T Eppig

¹Klinik für Augenheilkunde, Universitätsklinikum des Saarlandes, UKS, Homburg/Saar. melhusseiny@hotmail.com

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft

|October 19, 2013

Summary

Femtosecond laser-assisted implantation of Intracorneal Ring Segments (INTACS) significantly improves visual acuity and reduces refractive error in patients with ectatic corneal diseases. This minimally invasive procedure offers a viable alternative to corneal transplantation.

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Area of Science:

Ophthalmology
Corneal Surgery
Refractive Surgery

Background:

Keratoconus management has evolved with surgical options like Intracorneal Ring Segments (INTACS).
INTACS implantation aims to reduce irregular astigmatism and the need for corneal grafts in keratoconus patients.
Ectatic corneal diseases, including keratoconus and post-LASIK keratectasia, present challenges in visual rehabilitation.

Purpose of the Study:

To evaluate the efficacy of femtosecond laser-assisted INTACS implantation in treating ectatic corneal diseases.
To assess the visual and refractive outcomes following this surgical procedure.
To determine the safety and reliability of femtosecond laser-assisted INTACS implantation.

Main Methods:

A cohort of 20 eyes from 16 patients with ectatic corneal diseases underwent femtosecond laser-assisted INTACS implantation.
The procedure involved creating a precise 360° tunnel for INTACS insertion at 80% corneal depth.
Preoperative and 6-month postoperative visual acuity, refractive error, and corneal topography were analyzed.

Main Results:

Mean uncorrected visual acuity improved from 0.07 to 0.6, and best-corrected visual acuity improved from 0.4 to 0.9.
Mean spherical refractive error decreased from -7.6 D to -1.4 D, and astigmatism reduced from -6.0 D to -4.3 D.
Corneal flattening (K readings) and central eccentricity index were significantly reduced, with no observed complications.

Conclusions:

Femtosecond laser-assisted INTACS implantation is a safe and effective alternative to early keratoplasty for suitable keratoconus patients.
The procedure offers a minimally invasive and reliable surgical management option for ectatic corneal diseases.
Improved visual acuity and refractive outcomes support INTACS as a valuable treatment modality.