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Jaime Larrea Gonzalez, Arturo J Ramirez-Miranda, Alejandro Navas, Enrique O Graue-Hernandez, Aida Jimenez-Corona; Correlation of Anterior and Posterior Corneal Shape in Clinical Keratoconus. Invest. Ophthalmol. Vis. Sci. 2016;57(12):2902.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the corneal volume, pachymetry, and correlation of anterior and posterior corneal shape in subclinical and clinical keratoconus.
Eyes were placed into 3 groups: keratoconus grade I, grade II, subclinical and a control group. All eyes undewent corneal curvature evaluation by Scheimpflug imaging (Sirius). The posterior-anterior corneal power ratio was also calculated.
172 eyes (92 patients) were evaluated. Astigmatism and keratometry of both surfaces were significantly higher in the 3 groups (P=<0.05). Posterior astigmatism was significantly higher in the subclinical group . A correlation in astigmatism between the anterior and posterior surface was found in all groups.
The correlation between both surfaces was low, and the correlation between anterior and posterior astigmatism was maintained
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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