gms | German Medical Science

25th Annual Meeting of the German Retina Society

German Retina Society

01.06. - 02.06.2012, Münster

SD-OCT based characterization of eyes transitioning from early age-related macular degeneration to the neovascular form

Meeting Abstract

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  • Florian M. Heußen - Doheny Eye Institute, Los Angeles, USA
  • Y. Ouyang - Doheny Eye Institute, Los Angeles, USA
  • S.R. Sadda - Doheny Eye Institute, Los Angeles, USA

German Retina Society. 25th Annual Conference of the German Retina Society. Münster, 01.-02.06.2012. Düsseldorf: German Medical Science GMS Publishing House; 2012. Doc12rg28

doi: 10.3205/12rg28, urn:nbn:de:0183-12rg280

This is the translated version of the article.
The original version can be found at: http://www.egms.de/de/meetings/rg2012/12rg28.shtml

Published: May 30, 2012

© 2012 Heußen et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.


Outline

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Purpose: Identify spectral domain OCT (SD-OCT) features in eyes with early age-related macular degeneration (AMD) which predict transition to neovascular AMD (NVAMD) within the next 12 months.

Methods: From a database of AMD cases we retrospectively selected eyes that transitioned to NVAMD with SD-OCT documentation (cube scans, 512x128). All scans were taken within 12 months prior to the clinical diagnosis of choroidal neovascularization (CNV). SD-OCT scans from a control group of patients with high risk (AREDS 3 or 4) early AMD who did not transition were also selected for masked grading. Graded parameters included: break/thickening/thinning/integrity of the RPE-band, internal reflectivity of pigment epithelial detachments (PED), retinal atrophy (RA), quantification (# of B-scans, maximum height) of any subretinal fluid (SRF), cystoid macular edema (CME), or intraretinal hyperreflective foci (HRF).

Results: 23 eyes from the transitional group (TG) and 23 control eyes were included. The logistic regression model showed a significant predictive power of HRF (>10 B-scans, odds ratio (OR) 6.18, 95% confidence interval (CI) 1.03 to 37.13), internal PED reflectivity (OR 7.92, CI 1.02 to 61.51), and RA (OR 0.07, CI 0.01 to 0.72) with regard to transitioning to NVAMD. Interestingly, 4 eyes in the TG showed a subtle presence of SRF or CME, although clinically they were classified as dry AMD at that timepoint.

Conclusions: Eyes with HRF or PED with heterogenous internal reflectivity on OCT seem to be at risk for transitioning. While validation in a prospective series is warranted, we advise close monitoring of patients exhibiting these features.