Ocular Ultrasound is used to assess the structures inside the eye using a little Ultrasound probe. Sound waves transmitted from the probe reflect in a different way through different layers of the eye and produce different spikes. This technique is used if the view to the retina is prevented by conditions like a dense cataract or vitreous hemorrhage. The Ultrasound probe can generate an Ultrasound picture of the eye when the view to the rear of the eye is not possible. The Ultrasound also can be used to measure melanomas or assess nevi in the eye.