Ophthalmic Ultrasound is a special ophthalmology device used for the diagnosis of intraocular diseases, the measurement of ocular biological structure parameters and the numerical calculation and design of intraocular lens. Ophthalmology A or B ultrasound examination uses ultrasound sound energy reflection waveform images to reflect the structure of the eyeball orbit. The physical diagnosis technology for pathological changes has the characteristics of accurate diagnosis, painless and harmless, convenient and quick development. It can assist in the diagnosis of vitreous, retinal and retrobulbar diseases, such as vitreous opacity, vitreous degeneration, vitreous hemorrhage, vitreous retinal organizing membrane, retinal detachment, choroidal detachment, intra- and extra-ball and ball-wall occupying diseases. We have A, B, P three models.