Evaluation of Intraocular Pressure and Other Biomechanical Parameters to Distinguish between Subclinical Keratoconus and Healthy Corneas
Por:
Peris-Martínez C, Díez-Ajenjo MA, García-Domene MC, Pinazo-Durán MD, Luque-Cobija MJ, Del Buey-Sayas MÁ and Ortí-Navarro S
Publicada:
1 may 2021
Ahead of Print:
28 abr 2021
Categoría:
Medicine (miscellaneous)
Resumen:
(1) Purpose: To assess the main corneal response differences between normal and subclinical keratoconus (SCKC) with a Corvis(R) ST device. (2) Material and Methods: We selected 183 eyes of normal patients, of a mean age of 33 +/- 9 years and 16 eyes of patients with SCKC of a similar mean age. We measured best corrected visual acuity (BCVA) and corneal topography with a Pentacam HD device to select the SCKC group. Biomechanical measurements were performed using the Corvis(R) ST device. We carried out a non-parametric analysis of the data with SPSS software (Wilcoxon signed rank-test). (3) Results: We found statistically significant differences between the control and SCKC groups in some corneal biomechanical parameters: first and second applanation time (p = 0.05 and p = 0.02), maximum deformation amplitude (p = 0.016), highest concavity radius (p = 0.007), and second applanation length and corneal velocity ((p = 0.039 and p = 0.016). (4) Conclusions: Our results show that the use of normalised biomechanical parameters provided by noncontact tonometry, combined with a discriminant function theory, is a useful tool for detecting subclinical keratoconus.
Filiaciones:
:
FISABIO Oftalmología Médica (FOM), Anterior Segment and Cornea and External Eye Diseases Unit, Bifurcación Pío Baroja-General Avilés, 12, E-46015 Valencia, Spain
Surgery Department, Ophthalmology, School of Medicine, University of Valencia, Av. Blasco Ibáñez, 15, E-46010 Valencia, Spain
Aviño Peris Eye Clinic, Avinguda de l'Oest, 34, E-46001 Valencia, Spain
:
FISABIO Oftalmología Médica (FOM), Anterior Segment and Cornea and External Eye Diseases Unit, Bifurcación Pío Baroja-General Avilés, 12, E-46015 Valencia, Spain
Optics, Optometry and Vision Sciences Department, School of Physics, University of Valencia, Dr. Moliner, 50, E-46100 Valencia, Spain
:
FISABIO Oftalmología Médica (FOM), Anterior Segment and Cornea and External Eye Diseases Unit, Bifurcación Pío Baroja-General Avilés, 12, E-46015 Valencia, Spain
Optics, Optometry and Vision Sciences Department, School of Physics, University of Valencia, Dr. Moliner, 50, E-46100 Valencia, Spain
:
Surgery Department, Ophthalmology, School of Medicine, University of Valencia, Av. Blasco Ibáñez, 15, E-46010 Valencia, Spain
:
FISABIO Oftalmología Médica (FOM), Anterior Segment and Cornea and External Eye Diseases Unit, Bifurcación Pío Baroja-General Avilés, 12, E-46015 Valencia, Spain
Optics, Optometry and Vision Sciences Department, School of Physics, University of Valencia, Dr. Moliner, 50, E-46100 Valencia, Spain
Del Buey-Sayas MÁ:
Hospital Lozano Blesa, Anterior Segment and Cornea and External Eye Diseases, E-46015 Zaragoza, Spain
Ortí-Navarro S:
Optics, Optometry and Vision Sciences Department, School of Physics, University of Valencia, Dr. Moliner, 50, E-46100 Valencia, Spain
Green Published, gold
|