Correcting keratoconus with intracorneal rings.

PURPOSE To evaluate the potential of intrastromal corneal ring technology (Intacs, KeraVision) to correct keratoconus without central corneal scarring. SETTING Department of Ophthalmology, Brest University Hospital, Brest, France. METHODS In this prospective, noncomparative, interventional case series, Intacs segments were implanted in 10 keratoconic eyes with clear central corneas and contact lens intolerance after corneal pachymetry was checked. Segment thicknesses varied based on corneal topography analysis. RESULTS No intraoperative complications occurred. The mean follow-up was 10.6 months. Postoperative results revealed a reduction in astigmatism and spherical correction and an increase in topographical regularity and increased uncorrected visual acuity. CONCLUSION Intacs technology can reduce the corneal steepening and astigmatism associated with keratoconus.

[1]  L. Buratto,et al.  Excimer laser lamellar keratoplasty of augmented thickness for keratoconus. , 1998, Journal of refractive surgery.

[2]  D. Evensen,et al.  Effects of intrastromal corneal ring size and thickness on corneal flattening in human eyes. , 1991, Refractive & corneal surgery.

[3]  M. Blumenthal,et al.  Three year results of photoastigmatic refractive keratectomy for mild and atypical keratoconus , 1998, Journal of cataract and refractive surgery.

[4]  B. L. Halliday,et al.  Epikeratophakia for keratoconus , 1990, Eye.

[5]  R. Buckley,et al.  Excimer laser superficial keratectomy for proud nebulae in keratoconus. , 1994, The British journal of ophthalmology.

[6]  B. Cochener,et al.  Myopic photorefractive keratectomy in eyes with atypical inferior corneal steepening , 1996, Journal of cataract and refractive surgery.

[7]  R. Belfort Junior,et al.  Intrastromal corneal ring: 12-month sighted myopic eyes. , 1996, Journal of refractive surgery.

[8]  J. Krumeich,et al.  Live‐epikeratophakia for keratoconus , 1998, Journal of cataract and refractive surgery.

[9]  J. Mortensen,et al.  Excimer laser photorefractive keratectomy for treatment of keratoconus. , 1994, Journal of refractive and corneal surgery.

[10]  H. Kaufman,et al.  Epikeratophakia for the treatment of keratoconus. , 1982, American journal of ophthalmology.

[11]  D. Sanders,et al.  Epikeratophakia for Keratoconus: The Nationwide Study , 1986 .

[12]  S. Shah,et al.  PRK in patients with a keratoconic topography picture. The concept of a physiological 'displaced apex syndrome'. , 1996, The British journal of ophthalmology.

[13]  D. Schanzlin,et al.  One-Year Results of the Intrastromal Corneal Ring in Nonfunctional Human Eyes , 1995 .

[14]  R. Vajpayee,et al.  Epikeratoplasty for keratoconus using manually dissected fresh lenticules: 4-year follow-up. , 1997, Journal of refractive surgery.

[15]  P. Asbell,et al.  The intrastromal corneal ring segments. Phase II results for the correction of myopia. , 1997, Ophthalmology.