Glaucoma screenings can help identify people who may have the disease to encourage them to receive care. Ophthalmologists must stress to participants the importance of seeking that care and adhering to any subsequently prescribed therapy. Vision loss from glaucoma occurs with the death of the retinal ganglia cells that travel from the optic nerve to the brain. Therefore, a current goal is to identify sick cells that try to "rescue" them by lowering IOP. For the future, however, the hope is to be able to regenerate cells that have been sickened by the disease.