Glaucoma can NOT be reversed.
More Info: Though there is plenty of research underway, currently glaucoma cannot be reversed nor can the vision that has been lost be regained. Surgery and/or medication may be able to halt the progression of glaucoma.
Current research has been promising in discovering that the retinal ganglion cell, the neuron responsible for receiving and transmitting visual images to the brain, undergoes a degenerative process before it dies. Researchers are now focusing on how to slow the degenerative process prior to vision loss. Research is also suggesting that glaucoma is more than a ganglion cell disease that includes other cells. This new information offers further target areas to focus for research and treatment.
"Glaucoma Facts and Stats | Glaucoma Research Foundation." Glaucoma Research Foundation. N.p., n.d. Web. 16 Nov. 2011. .
"New Discoveries That Could Cure Glaucoma | Glaucoma Research Foundation." Glaucoma Research Foundation. N.p., n.d. Web. 16 Nov. 2011. .