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Scheimpflug-based tomography and biomechanical assessment in pressure-induced stromal keratopathy

Poster Details

First Author: F.Faria Correia PORTUGAL

Co Author(s):    I. Ramos   B. Valbon   A. Luz   C. Roberts   R. Ambrósio Jr  

Abstract Details


To report the tomographic and biomechanical findings before and after treatment of a case of pressure-induced stromal keratopathy (PISK), which was misdiagnosed as diffuse lamellar keratitis (DLK).


Instituto de Olhos Renato Ambrósio, Rio de Janeiro - Brasil


Case report of a referred patient with supposed diagnosis of DLK after LASIK in the right eye. Scheimpflug-based corneal tomography and biomechanical assessment were provided by the Pentacam HR and CorVis ST (Oculus Optikgeräte GmbH, Wetzlar, Germany).


A layer of corneal opacity beneath the flap with a presumably fluid-filled interface area was observed on slit-lamp biomicroscopy. Scheimpflug image from Pentacam revealed a hypereflective area underneath the flap interface. Goldmann applanation tonometry (GAT) was 12 mmHg, while CorVis-IOP (intraocular pressure) was 53.5mmHg with deformation amplitude of 0.42mm. Two-days after starting oral and topical ocular hypotensive therapy, CorVis-IOP was 14mmHg and deformation amplitude was 1.02mm.


Ocular hypertension in PISK was associated with lower deformation response, along with steepening and thickening of the cornea.

Financial Disclosure:

... receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented.

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