Tarsus (eyelids) is a groove in the inner surface of each eyelid. Along the inner margin of the tarsus are modified sebaceous glands known as tarsal glands (or meibomian glands), aligned vertically within the tarsi: 30 to 40 glands in the upper lid, and 20 to 30 in the lower lid, which secrete a lipid-rich product which helps keep the lacrimal secretions or tears from evaporating too quickly, thus keeping the eye moist. Tarsus (eyelids) The tarsi (tarsal plates) are two comparatively thick, elongated plates of dense connective tissue, about in length; one is found in each eyelid, and contributes to its
Surgical sealant film Surgical sealant film A surgical sealant film is an implantable medical device used during surgery. It is a preformed flexible patch that is applied to supplement sutures and surgical staples to seal tissues and prevent leaks of fluid (including blood and cerebrospinal fluid) and air. The sealant film is synthetic and incorporates absorbable polymers, including poly(lactide-co-glycolide). The polymeric components impart structural and adhesive properties with the sealing effect achieved by incorporation of a bioadhesive polymer. This forms a covalent bond to primary amines present on the tissue surfaces. In turn this results in the film rapidly becoming effective in providing