Glaucoma is a group of eye diseases causing optic nerve damage. The optic nerve carries images from the retina, which is the specialized light sensing tissue, to the brain so we can see.In glaucoma, eye pressure plays a role in damaging the delicate nerve fibers of the optic nerve.When a significant number of nerve fibers are damaged, blind spots develop in the field of vision.Once nerve damage and visual loss occur, it is permanent.n glaucoma, eye pressure plays a role in damaging the delicate nerve fibers of the optic nerve. When a significant number of nerve fibers are damaged, blind spots develop in the field of vision. Once nerve damage and visual loss occur, it is permanent.
'lettuce' also found in translations in French-English dictionary. pied de laitue. pied de laitue. exp. lettuce plant. coeur de laitue. coeur de laitue. nm.earch also in: Web News Encyclopedia Images Context. lettuce n (=salad leaves) salade f (=plant) laitue f cos lettuce n laitue f romaine f, romaine curly lettuce n laitue f frisee frisÃ©e iceberg lettuce n laitue f. iceberg
Water lettuce is a free-floating aquatic plant whose origins are uncertain. An explorer in 18 th century Florida was the first person to record its presence in North America. Some experts believe it is native to the southeastern United States, while others believe it came from Africa, southern Asia or South America.ater lettuce is a prohibited plant in Florida, Louisiana, Mississippi and Texas, and is considered a noxious weed in South Carolina and Delaware. Water lettuce forms large, dense floating mats. The plant can adapt to life in ponds, lakes and quiet areas of rivers and streams, but cannot withstand salt water.