Escalon Medical makes and sells ophthalmic medical devices, with two primary product lines: ultrasound imaging devices and surgical supplies. The ultrasound business, sold under the Sonomed brand and developed in-house for over 30 years, includes A-Scans (used to calculate lens implant power before cataract surgery), B-Scans (two-dimensional imaging of eye structures), UBM devices (high-frequency imaging for glaucoma and surgical planning), and pachymeters (corneal thickness measurement). The surgical products business includes intraocular gases used in retinal detachment surgery, disposable surgical packs for vitreoretinal procedures, and a web-based image management platform. Escalon sells globally through independent sales reps, distributors, and a small direct sales force. The business model combines one-time capital equipment sales — which can be lumpy and budget-sensitive — with more recurring revenue from disposable surgical supplies. Escalon outsources component manufacturing and sterilization, keeping its internal focus on design, assembly, and service. The company is very small, with only 39 employees, and its auditors have raised going concern doubts citing recurring losses and weak liquidity, though Escalon has been profitable in some recent years.