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