August consultation #8

In cases of irregular corneal astigmatism, we begin with a thorough slitlamp evaluation. Given the absence of possible causes (eg, dry-eye disease, anterior EBMD, Salzmann nodules) and the presence of bilateral inferior steepening on topography, we are concerned for corneal ectasia. Before discussing surgery, we would obtain corneal tomography to measure posterior curvature and to evaluate for thinning. Specifically, we would evaluate the tomography for features reported to have particular utility for the diagnosis of early keratoconus, including index height decentration and the index of vertical asymmetry.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Consultation Section: Cataract Source Type: research