The only proven eye condition that can be treated with corneal epithelial stem cell is a condition known as corneal epithelial stem cell deficiency. There are many researches going on at present looking into the use of stem cells to treat eye diseases. Diseases that can potentially be treated with stem cells include optic neuropathy, autoimmune diseases, age-related macular degeneration, retinal detachment, corneal dystrophies, multiple sclerosis and retinitis pigmentosa. These are under various stages of clinical trials at the moment.