Ultrapure hyaluronic acid and the use thereof

摘要: An ultra-pure, high molecular weight hyaluronic acid fraction which is characterized by the absence of significant cellular infiltration vitreous and anterior chamber, flare in aqueous humor, haze or pathological changes to cornea, lens, iris, retina, choroid owl monkey eye when one milliliter a 1% solution sodium salt thereof dissolved physiological buffer implanted replacing about one-half existing liquid vitreous. This material obtained from animal tissue containing process comprises removing blood acid, extracting therefrom, deproteinizing extract, any unidentified inflammation causing agents persent therein treating deproteinized extract at pH 6.0 - 7.0 with volume chloroform least equal that form two-phase mixture then stirred, sufficiently ensure intimate contact between said two phases, 15° 40° C., followed separating out discarding phase.