COMPARISON OF STEREO OPTIC DISC PHOTOGRAPHS FROM THE NIDEK 3-DX AND ZEISS RETINAL CAMERAS

Objective: To compare the Zeiss retinal camera with the Nidek 3-Dx cam era for photographic quality and stereo separation. Subjects: Eleven s ubjects (22 eyes) selected from patients referred for optic photograph y. Methods: The subjects were photographed using the Nidek 3-Dx camera for simultaneous stereo photographs, and the 30 degrees field and 15 degrees field settings on the Zeiss retinal camera for sequential ster eo photographs. Four ophthalmologists qualitatively scored the photogr aphs on a five-point scale for stereo separation and photographic reso lution and sharpness. The results from the four observers were average d and the Friedman two-way analysis of variance used to analyse the re sults. Conclusions: It was found that the stereo separation is signifi cantly better using the Nidek camera when compared with both the 30 de grees and 15 degrees Zeiss results. There was no significant differenc e in photographic quality between the Nidek and Zeiss 30 degrees photo graphs. It was also found that the Zeiss 30 degrees images had a signi ficantly higher quality than the Zeiss 15 degrees, which contradicted previous results.