The Ocular Instruments OG3MA 18mm Three Mirror Universal Laser Lens Gonio Ophthalmic is a specialized lens designed for ophthalmology. Made by the brand Ocular in the United States, this lens is intended for precise measurements and examinations in the field of ophthalmology. With its unique three mirror design, this lens allows for accurate and comprehensive analysis of the eye's structures, making it a valuable tool for professionals in the industry.