Document Detail

Added value of OCT in evaluating the presence of leakage in patients with age-related macular degeneration treated with PDT.
MedLine Citation:
PMID:  16523305     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Evaluating the presence of leakage on fluorescein angiography (FA) in patients with age-related macular degeneration (AMD) retreated with photodynamic therapy (PDT) can be difficult. New diagnostic tools such as optical coherence tomography (OCT) might help to optimize PDT management. METHODS: Thirty AMD patients scheduled for regular follow-up FA in conjunction with PDT treatment were also scanned with OCT. Follow-up data at 9 months were retrieved from the patients' medical records. Inter-observer agreement [kappa coefficient] for the presence of leakage on FA, for OCT parameters for leakage, and agreement between FA and OCT evaluations were calculated. The indication for retreatment was evaluated using the leakage analysis based on FA alone, OCT alone, and both examinations combined, and compared to the actual follow-up of the patients at 9 months. RESULTS: Agreement between the two observers for the presence of leakage on FA was moderate (kappa=0.51). OCT agreement between the two observers for the presence of leakage was good (kappa=0.85). Agreement between FA and OCT for the presence of leakage was poor (kappa=0.16). Follow-up data at 9 months on all patients were analyzed. Seven out of 30 patients were not retreated at the time of examination, and four of these patients (57%) remained stable without further treatment. Twenty-three patients did receive a PDT treatment at the time of examination; and eight of these patients did not show leakage on OCT, and five of these patients (62%) remained stable without additional treatment. In contrast, only three out of 15 patients (20%) with leakage on both FA and OCT remained stable during this 9 month follow-up period. CONCLUSIONS: Inter-observer agreement for the presence of leakage was moderate for FA and good for OCT. There was considerable disagreement between leakage as judged by OCT and by FA. OCT could be of help in the decision regarding PDT retreatment. Assuming that 57% of the patients without leakage either on FA or OCT would remain stable without retreatment, the rate of probable ineffective retreatment could be reduced from 35% to 20%.
M E J van Velthoven; M D de Smet; R O Schlingemann; M Magnani; F D Verbraak
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Publication Detail:
Type:  Journal Article     Date:  2006-03-08
Journal Detail:
Title:  Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv für klinische und experimentelle Ophthalmologie     Volume:  244     ISSN:  0721-832X     ISO Abbreviation:  Graefes Arch. Clin. Exp. Ophthalmol.     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-08-22     Completed Date:  2007-01-26     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8205248     Medline TA:  Graefes Arch Clin Exp Ophthalmol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1119-23     Citation Subset:  IM    
Department of Ophthalmology, Academic Medical Centre, Amsterdam, The Netherlands.
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MeSH Terms
Capillary Permeability
Choroidal Neovascularization / drug therapy,  etiology
Exudates and Transudates
Fluorescein Angiography
Macular Degeneration / complications,  diagnosis*,  drug therapy*
Macular Edema / diagnosis*
Observer Variation
Retina / pathology*
Tomography, Optical Coherence*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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