VISUfly is presented in an easy-to-take daily sachet. What is VISUfly?. Used for Vitreous health. Type of product Soluble sachet. Promote collagen health for skin, joints, and connective tissues. Peptan Collagen: a patented hydrolysed bovine collagen essential for the body, naturally present in mammals, that tends to decrease physiologically from as early as age 25.