Macular edema Macular edema Macular edema occurs when fluid and protein deposits collect on or under the macula of the eye (a yellow central area of the retina) and causes it to thicken and swell (edema). The swelling may distort a person's central vision, because the macula holds tightly packed cones that provide sharp, clear, central vision to enable a person to see detail, form, and color that is directly in the centre of the field of view. The causes of macular edema are numerous and different causes may be inter-related. Cystoid macular edema (CME) involves fluid accumulation in the outer plexiform
Tissue expansion in the case of traumatic burn or injury. There remains much clinical interest today in developing inexpensive engineered skin grafts that possess the mechanical and biological properties of skin. Some circumcised men have used non-surgical tissue expansion techniques to expand their surviving penile skin, making it a longer tube so it can function like a foreskin. Tissue expansion Tissue expansion is a technique used by plastic, maxillofacial and reconstructive surgeons to cause the body to grow additional skin, bone, or other tissues. Other biological phenomena such as tissue inflammation can also be considered expansion (see tissue inflammation below). Skin expansion