Ultrasonography is easily, safe and non-invasive method which can be used in examination and
diagnosis of ocular affections which could not be diagnosed by naked eye such as cataract and intra-ocular hemorrhage. Ultrasonography is considered as the only method for imaging the most segments of the eye globe when the light-conducting media are opaque. In this study, twenty dogs with ocular affections were examined by eye ultrasonography of a 10 MHz micro-convex probe. The results revealed that four cases had thin hyper-echoic lines of the lens indicating early cataract changes, three cases had thin hyper-echoic rims around the lens suggestive of cortical cataract were done. There was one case of aphakia, which characterized by absence of the hyper-echoic posterior lens capsule. Five cases of retinal detachment were detected and by ultrasonography, they appeared as hypo-echoic mass in an-echoic vitreal body. Swelling in the cornea which appeared in three cases of glaucoma and the swelling appeared as an-echoic area in front to the anterior chamber. One case of hypopyon was appeared as a hyper-echoic mass in the anterior chamber. One case of keratitis which appear as hyper-echoic spot in cornea. Two cases of severe iridocyclitis were noticed as the pupil appeared constricted with increased hyper-echoic, proliferated, thickening of the ciliary body. In conclusion, ultrasonography of the eye is a safe, rapid, non-invasive and reliable method for diagnose almost eye affections. The 10 MHz probe gave excellent quality real-time images of posterior chamber and vitreous body.