A:Cribbing is when a horse places its front teeth on a horizontal surface, arches its neck, and pulls backwards. This behavior is usually associated with a grunting noise as the horse gulps air, and is often referred to as wind sucking or aerophagia. This is a vice that many stalled horses pick up because of boredom.
For the wet form of macular degeneration, injections of Macugen, Lucentis, Avastin or Eylea are made directly into the eye. The above-mentioned cancer drug Avastin is considerably less expensive and appears to produce similar results in macular degeneration treatment, though it is not FDA-approved for this use. The Lucentis vs. Avastin debate continues while an ongoing clinical trial compares outcomes and safety of the two treatments.
Macular degeneration destroys cells called retinal pigment epithelium, or RPE, a key component of sharp, detailed central vision. Freeman had the most common form, known as dry macular degeneration. The treatments for dry macular degeneration are really few, if any. There are no approved treatments for macular degeneration, said Dr. Steven Schwartz, an UCLA eye surgeon. Dr. Schwartz modified human embryonic stem cells in the lab and turned them into the RPE cells that were needed. He transplanted those new cells by injection into one of Sue Freeman's eyes.