Original articleClinical Assessment of Stereoscopic Optic Disc Photographs for Glaucoma: The European Optic Disc Assessment Trial
Section snippets
Ophthalmologists
We invited ophthalmologists in 11 countries across Europe (the 5 bigger countries [France, Germany, Italy, Spain, and United Kingdom] and 6 smaller countries [Austria, Belgium, Finland, Greece, Hungary, and The Netherlands]) to participate in this study. They all received letters in their native tongue, explaining the aim of the study, the estimated time their participation would take, and the anonymous nature of the study. They were also promised to receive a small gift on completion. Those
Results
Of the 875 ophthalmologists who were invited, 276 (31.5%) agreed to participate. Of these, 245 (88.8%) returned a fully completed score sheet. Figure 2 shows the number of those invited per country and the number of completed score sheets that were returned. The rate of complete responders varied considerably between countries. The highest rate was in Austria (69.2%). France and Italy showed the lowest rate of approximately 15%. Two of the participants had not yet completed their residency;
Discussion
We have found that ophthalmologists across Europe correctly classify stereoscopic optic disc photographs in approximately 80% of cases. The range, however, was large with some correctly classifying approximately 60% of cases. The conditions for judging optic discs in our study were almost ideal; one could take as much time as desired, without real-life interferences such as eye movements, blinks, photophobia, and variable patient cooperation. In addition, we used only healthy and glaucomatous
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Manuscript no. 2009-64.
Financial Disclosure(s): The author(s) have made the following disclosure(s):
NJ Reus, Pfizer, CLS; HG Lemij, Pfizer, CLS; DF Garway-Heath, Pfizer, CLS; Heidelberg Engineering, S; Carl Zeiss Meditec, CS; PJ Airaksinen, none; A Anton, Pfizer, L; Carl Zeiss Meditec, C; AM Bron, Pfizer, C; C Faschinger, Pfizer, CL; G Holló, Pfizer, CL, Carl Zeiss Meditec, C; M Iester, none; JB Jonas, Pfizer, C, Carl Zeiss Meditec, L, Heidelberg Engineering, L; A Mistlberger, none; F Topouzis, Pfizer, CL; TG Zeyen, Pfizer, L.
Pfizer Inc., provided unrestricted financial support. They had no role in the design or conduct of this research; the data collection, analysis, and interpretation; the preparation of the manuscript; or the decision to submit the manuscript for publication.