Comparison of Canine Fundus Photographs Captured Using 2 Types of Cameras

Abstract

We compared the fundus photographs obtained using Clear View with those obtained using a GENESIS-Df fundus camera. Within the range of Clear View, the longitudinal and horizontal diameters were 5.13 ± 0.42 and 4.99 ± 0.45 times greater than the corresponding diameters of the optic disk. On the other hand, within the range of GENESIS-Df the longitudinal and horizontal diameters were 2.99 ± 0.33 and 3.54 ± 0.36 times greater than the corresponding diameters of the optic disk. Thus, the longitudinal and horizontal diameters differed significantly between the Clear View and GENESIS-Df images (p < 0.01, paired t -test). Moreover, the panoramic view of the fundus was created using 4.63 ± 0.32 views of Clear View, but 11.26 ± 1.93 views of GENESIS-Df. Thus, the number of sheets required to generate a panoramic view of the fundus differed significantly between the 2 cameras (p < 0.05, paired t -test). Six beginners could use both the cameras and capture clear fundus photographs. The images obtained with both the cameras were clear and of superior quality and these images could be used for diagnosis. We infer that Clear View is suitable for screening because it offers a better panoramic photograph, while GENESIS-Df is suitable for the observation of the finer details because it provide high-resolution images.