<prompt> Mucopolysaccharide hyaluronic acid is present in -Vitreous humorCorneaBlood vesselsLens  <response>: The normal youthful vitreous gel is composed of a network of randomly-oriented collagenfibrils interspersed with numerous spheroidalmacromolecules of hyaluronic acid. Ref comprehensive ophthalamology AK Khurana 4th edition page no:243 . 