Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Diagnosis of multiple corneal ectasias co-existing in the same eye: a case series

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Session Details

Session Title: Presented Poster Session: Anterior Segment Imaging

Session Date/Time: Monday 12/09/2016 | 09:30-11:00

Paper Time: 10:20

Venue: Poster Village: Pod 4

First Author: : P.Padmanabhan INDIA

Co Author(s): :    A. Anil KUmar              

Abstract Details


To describe the clinical features, topographic and tomographic characteristics of eyes with multiple corneal ectasias co-existing in the same eye.


Sankara Nethralaya, Medical Research Foundation 18 College Road, Chennai - 600 006, Tamil Nadu, India


This is a retrospective observational study of eyes diagnosed with multiple corneal ectasias coexisting in the same eye. A detailed clinical examination in all patients included retinoscopy, measurement of corrected distance visual acuity (CDVA), intraocular pressure, biomicroscopy and fundus examination. Simulated keratometry along steeper and flatter meridians (Sim K1 & Sim K2 respectively) and axial curvature map pattern were noted from corneal topography (TMS-IV, Tomey Corporation, Japan). Scheimpflug images, posterior corneal elevation, mean corneal asphericity, pachymetry at the thinnest point, average pachymetry progression index and relative pachymetry data were noted from tomography (Pentacam HR, Oculus Optikgeraete GmbH, Germany).


Thirteen eyes of 8patients (5male,3female) between 18-56 years were diagnosed with multiple corneal ectasias in the same eye. Keratoconus(KC) with Pellucid Marginal Degeneration(PMD) were seen in 10eyes, keratoglobus(KG) with PMD in 2eyes and KC+KG+PMD in 1eye. Diagnosis was suspected on biomicroscopy in 6eyes, seen in Scheimpflug images in 11eyes and inferred from posterior corneal elevation and pachymetry data in 13eyes. Corneal topography alone was not helpful in diagnosing the combination of ectasias. Astigmatism was with-the-rule in 7 eyes, oblique in 6eyes. Mean CDVA:0.57±0.37 logMAR scale, mean spherical equivalent:-8.50±5.50D, mean SIM K1:56.57±3.29D, SIM K2:50.91±1.95D, mean thinnest pachymetry:353.6±82.8µm and mean corneal asphericity:-0.51±0.47


Multiple corneal ectasias within the same eye is a rare occurrence that may be overlooked on clinical examination. Corneal topography alone is inadequate to detect coexisting ectasias and one needs supplemental data provided by a Scheimpflug imaging system.

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