Medical Conditions. If your eyelids are drooping, it could be a sign of an underlying medical condition, especially if the issue affects both eyelids. If just one of your eyelids droops, it may be a result of a nerve injury or a temporary sty (inflammation and swelling of the eyelid that is usually harmless). Routine LASIK or cataract surgery is sometimes to blame for the development of ptosis, as a result of the muscle or tendon being stretched.
Drywall (also known as plasterboard, wallboard, gypsum board) is a panel made of gypsum plaster pressed between two thick sheets of paper.It is used to make interior walls and ceilings. Drywall construction became prevalent as a speedier alternative to traditional lath and plaster.rywall panels in the United States are manufactured in 48-inch (1.2 m), 54-inch (1.4 m) and 96-inch (2.4 m) wide panels in varying lengths to suit the application. Common panel thicknesses are 1â2 -inch (13 mm) and 5â8 -inch (16 mm), with panels also available in 1â4 -inch (6.4 mm) and 3â8 -inch (9.5 mm).
Joint compound (also known as drywall compound or mud) is a white powder of primarily gypsum dust mixed with water to form a mud the consistency of cake frosting, which is used with paper or fiber joint tape to seal joints between sheets of drywall to create a seamless base for paint on interior walls.hen used for new walls, joint compound effectively eliminates all blemishes from the surface of the drywall, such as fasteners, damage, or drywall tape. Joint compound is used to finish gypsum panel joints, corner bead, trim and fasteners, as well as skim coating.