a flowering plant whose stem above ground does not become woody. 2. such a plant when valued for its medicinal properties, flavor, scent, or the like. 3. Often, the herb. Slang. marijuana.
Retinal detachment is a disorder of the eye in which the retina peels away from its underlying layer of support tissue.Initial detachment may be localized or broad, but without rapid treatment the entire retina may detach, leading to vision loss and blindness. It is almost always classified as a medical emergency.Permanent damage may occur if the detachment is not repaired within 24â72 hours.nitial detachment may be localized or broad, but without rapid treatment the entire retina may detach, leading to vision loss and blindness. It is almost always classified as a medical emergency. Permanent damage may occur if the detachment is not repaired within 24â72 hours.
A retinal tear occurs when the tissue tears, allowing fluid to leak out. A retinal detachment occurs when the retina separates from the choroid, cutting off the blood supply to the retina. This usually develops after a retinal tear has already occurred.lthough it sounds painful, there is actually no discomfort or pain associated with retinal tears and detachments. However, there are several signs that may signal a tear or detachment has occurred or is about to occur: 1  Floaters in your line of sight.