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.
Vitamins Donât Improve Vision. The vitamins do not improve vision that is already lost. Macular degeneration primarily destroys central vision in both the wet form and the dry form. Patients with the wet form of macular degeneration may benefit from intravitreal injections of anti-VEGF whereas there is no acceptable treatment for the dry form.