Posterior keratoconus. An expanded classification scheme based on corneal topography

Ophthalmology
S K Rao, P Padmanabhan

Abstract

The purpose of the study was to evaluate corneal changes in posterior keratoconus. A retrospective review. Distinct topographic patterns were identified. Generalized posterior keratoconus showed uniform corneal steepening. Localized central and paracentral posterior keratoconus showed corneal steepening, and localized peripheral posterior keratoconus showed corneal flattening overlying the area of corneal change. The changes in central and paracentral posterior keratoconus appear to progress with an increase in patient age. Unilateral disease may have more amblyogenic potential. Posterior keratoconus manifests significant corneal surface alterations. The distinct topographic patterns seen probably warrant a further classification of localized posterior keratoconus into central-paracentral and peripheral varieties.

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Citations

Apr 5, 2003·Journal of Huazhong University of Science and Technology. Medical Sciences = Hua Zhong Ke Ji Da Xue Xue Bao. Yi Xue Ying De Wen Ban = Huazhong Keji Daxue Xuebao. Yixue Yingdewen Ban·Xinyu LiLiangxiu Qiu
Mar 24, 2009·Journal of Cataract and Refractive Surgery·Takefumi YamaguchiKazuo Tsubota
Apr 7, 2005·Journal of Cataract and Refractive Surgery·Nicolás CharlesDiego Wertheimer
Jul 29, 2016·Cornea·Alexandra Abdala-FiguerolaEnrique O Graue-Hernández
Jul 25, 2018·European Journal of Ophthalmology·Veronica Vargas, Jorge Alió
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Sep 8, 2000·Current Opinion in Ophthalmology·S K Rao, P Padmanabhan
Sep 30, 2020·BMJ Case Reports·Morgan M Harvey, Joseph W Schmitz
Aug 13, 1999·Journal of Cataract and Refractive Surgery·A T LeungD S Lam

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