Guardion Health Sciences, Inc. is a health sciences company. The Company develops, formulates and distributes condition-specific medical foods with an initial medical food product on the market under the brand name Lumega-Z that replenishes and restores the macular protective pigment. It has also developed a medical device, the MapcatSF. The MapcatSF is a non-mydriatic, non-invasive device that measures the macular pigment optical density (MPOD), which is the lens optical density and lens equivalent age, thereby creating an evidence-based protocol that is shared with the patient. The MapcatSF is manufactured and assembled in Irvine, California, and is distributed from its national headquarters in San Diego. The Company's Lumega-Z is ingested in the patient's home on a daily basis. Physicians measure the MPOD of their patients on Lumega-Z using the MapcatSF. It markets Lumega-Z to patients through ophthalmologists and optometrists.