Howard Instruments is a distributor of ophthalmic equipment and ophthalmic supplies including silicone oil, perfluorodecaline, iris retractors, trephine blades, infusion cannula, vitreous cutting systems, sulfur hexafluoride, perfluoropropane, hexafluoroethane, Phacojack® systems, Phaco® hand pieces, Phaco® pump motors, Phaco® needles, Phaco® irrigation sleeves, & Phaco® test chambers.