OSD can be so severe that we would fit a large scleral lens that is filled with saline to provide a tear reservoir on the front of the eye. The tear film is crucial for maintaining the health and integrity of the front of the eye. Various conditions that affect the eyelids, their movement, or the tear secreting glands can affect the tears and cause OSD.
Large contact lenses can also be used to support droopy eyelids (ptosis prop).
Contact lenses can also protect the cornea from conditions causing the eyelashes to turn inward can scratch and scar the cornea.