First Author: D.Gatinel FRANCE
Co Author(s): A. Saad
Purpose:
To investigate the application of anterior corneal and ocular aberrations in detecting mildly ectatic corneas.
Setting:
Rothschild Foundation, CEROC
Methods:
We retrospectively reviewed the data of 220 eyes separated into 3 groups by the Nidek Corneal Navigator System automated corneal classification software: normal (N) (n=123), Forme Fruste Keratoconus (N Topography with contralateral KC) (FFKC) (n=34) and KC (n=63). Eyes in the Normal group had documented 5 years history of non complicated LASIK surgery (preoperative wavefront data was used). Anterior corneal and ocular aberrations were obtained with the topograph- aberrometer OPD Scan II and compared using a Kruskall-Wallis test. Evaluation of these data to discriminate between the three groups was assessed using a Receiver-Operating Characteristic (ROC) curve analysis.
Results:
Corneal and Ocular tilt, vertical coma and trefoil were significantly different in the FFKC as compared to the N group. The discriminant functions between the FFKC and the N group and between the KC and the N group reached an Area under the ROC curve of 0.98 and 0.96 respectively.
Conclusions:
Indices generated from corneal and ocular wavefront aberration terms can identify very mild forms of ectasia that may be undetected by a Placido-based neural network programs. FINANCIAL DISCLOSURE?: ... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented
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