Leukodystrophy is one of a group of disorders characterized by degeneration of the white matter in the brain. The word leukodystrophy comes from the Greek roots leuko, white, dys, abnormal, and troph, growth. The leukodystrophies are caused by imperfect growth or development of the myelin sheath, the fatty covering that acts as an insulator around nerve fibers. When damage occurs to white matter, immune responses can lead to inflammation in the CNS, along with loss of myelin. The degenerat
A corneal laceration can be a partial- or full-thickness injury to the cornea. A partial-thickness injury does not violate the globe of the eye (abrasion). A full-thickness injury penetrates completely through the cornea, causing a ruptured globe. This topic discusses the full-thickness injury.
: a secretion of profuse tears that overflow the eyelids and dampen the face. : a transparent drop of fluid or hardened fluid matter (such as resin) : to fill with tears (see 1tear) : shed tears. : to separate parts of or pull apart by force : rend. : to wound by or as if by pulling apart by force : lacerate. : to divide or disrupt by the pull of contrary forces. : damage from being torn (see 3tear) : a hole or flaw made by tearing. : the act of tearing something.