The participants' best-corrected distance acuity was measured using a rear-illuminated Snellen chart at 6 meters (about 20 feet, or closer if the participant was not able to read the 6/60 optotype) and converted to LogMAR notation for the purposes of analysis.
Overview. Vanadium is a trace mineral found in many foods. Scientists think your body may need vanadium in very small amounts for normal bone growth. Scientists aren't sure exactly what effects vanadium may have, or what amount might be helpful, however, they know high doses of vanadium are likely to be unsafe.
Vanadium is an element that occurs in nature as a white-to-gray metal compounds, and is often found as crystals. Pure vanadium has no smell. It usually combines with other elements such as oxygen, sodium, sulfur, or chloride.Vanadium and vanadium compounds can be found in the earth's crust and in rocks, some iron ores, and crude petroleum deposits.Vanadium is used in producing rust-resistant, spring, and high-speed tool steels.Vanadium pentoxide is used in ceramics, as a catalyst, and in the production of superconductive magnets. Vanadyl sulfate and sodium metavanadate have been used as dietary supplements.anadium is used in producing rust-resistant, spring, and high-speed tool steels. Vanadium pentoxide is used in ceramics, as a catalyst, and in the production of superconductive magnets. Vanadyl sulfate and sodium metavanadate have been used as dietary supplements.