Escalon Medical is engaged in the development, manufacture, marketing and distribution of medical devices and pharmaceuticals in the area of ophthalmology. The Company owns subsidiary companies that are branded and operate together as Sonomed Escalon, which is engaged in ophthalmic diagnostics imaging, providing ultrasound, digital photography, and image management systems. Escalon's A-Scan provides information about the internal structure of the eye by sending a beam of ultrasound along a fixed axis through the eye and displaying the various echoes reflected from the surfaces intersected by the beam; its B-Scan is a diagnostic tool that supplies information to physicians where the media within the eye are cloudy or opaque. The Company's UBM is a high frequency/high resolution ultrasound device, designed to provide information about the anterior segment of the eye.