An article by Musarella and MacDonald “Current Concepts in the Treatment of Retinitis Pigmentosa” provides a synopsis of the current treatments of retinitis pigmentosa including the use of pharmacologic agents, nutritional therapies, stem cell approaches, artificial retinal implants, neuroprotective agents (CNTF, GDNF, and others), and gene therapy. Here, GDNF is linked to retinitis pigmentosa.