Camps, Vicente J., Piñero, David P., Mateo Pérez, Verónica, García Llopis, Celia, Artola, Alberto, Pérez Cambrodí, Rafael J., Ruiz Fortes, Pedro
Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery
Journal of Ophthalmology. Volume 2015 (2015), Article ID 824293, 6 pages. doi:10.1155/2015/824293
URI: http://hdl.handle.net/10045/50245
DOI: 10.1155/2015/824293
ISSN: 2090-004X (Print)
Abstract: 
Purpose. To validate clinically a new method for estimating the corneal power (P,) using a variable keratometric index (nkadj) in eyes with previous laser refractive surgery. Setting. University of Alicante and Medimar International Hospital (Oftalmar), Alicante, (Spain). Design. Retrospective case series. Methods. This retrospective study comprised 62 eyes of 62 patients that had undergone myopic LASIK surgery. An algorithm for the calculation of 11kadj was used for the estimation of the adjusted keratometric corneal power (Pkadj). This value was compared with the classical keratometric corneal power (Pk), the True Net Power (TNP), and the Gaussian corneal power (PcGauss). Likewise, Pkadj was compared with other previously described methods. Results. Differences between PcGauss and P, values obtained with all methods evaluated were statistically significant (p < 0.01). Differences between Pkadj and PcGauss were in the limit of clinical significance (p < 0.01, loA [ - 0.33,0.60] D). Differences between Pkadj and TNP were not statistically and clinically significant (p = 0.319, loA [- 0.50,0.44] D). Differences between Pkadj and previously described methods were statistically significant (p < 0.01), except with PcHaigisL (p = 0.09, loA [ - 0.37,0.29] D). Conclusion. The use of the adjusted keratometric index (nkadj) is a valid method to estimate the central corneal power in corneas with previous myopic laser refractive surgery, providing results comparable to PcHaigisL.
Keywords:Corneal power, Clinical validation, Keratometric index, Laser refractive surgery
Hindawi Publishing Corporation
info:eu-repo/semantics/article