Changes in Corneal and Refractive Astigmatism Using Intracorneal Ring Segments of 90 and 130 Degrees in Keratoconus

Sunday, April 27, 2014: 3:11 PM
Room 151B (Boston Convention and Exhibition Center)
Maria X. Nunez, MD, Clinica de Oftalmologia, Cali, Colombia
Claudia Blanco, MD, Clinica de Oftalmologia, Cali, valle, Colombia

Narrative Responses:

Purpose

To evaluate the effectiveness of the intracorneal ring segments, INTACS, of 90 and 130 degrees in patients diagnosed with Keratoconus with astigmatism greater  than myopia or astigmatism plus hyperopia through changes in topographical and refractive astigmatism

Methods

A non-randomized experimental prospective controlled study with a non-probabilistic sample, including 20 patients  with a diagnosis of keratoconus grade I, II and III according to the Amsler-Krumeich criteria and astigmatism greater than the spherical defect. Intracorneal rings was implanted according to Intacs nomogram version 3,0.  Magnitude and  axis of topographical and refractive astigmatism was obtain pre- operative  and 3 months post-operative . We measure the surgical induced astigmatism (SIA) in plus and minus cylinder form in the way to determine if therewere under or hypercorrections

Results
In process

Conclusion
In process