the aim of this study was to determine the prevalence and type of ophthalmic diseases among horse populations in the suburbian riding clubs of tehran. ophthalmologic examinations were performed in 901 horses and ocular lesions were diagnosed in 40 (4.4%) animals. in the 54 eyes of these horses that had ocular defects, 103 ocular abnormalities were detected. of those horses affected, 65% showed ...