A Study to Evaluate the BrainPort® Vision Device in Subjects Who Are Blind

Inclusion Criteria: * Confirmed written medical or low vision diagnosis of No Light Perception or Light Perception * Performance on the FrACT acuity test of worse than 20/5000 or impossible to measure. * Minimum post 6 months diagnosis blindness. * Previously completed conventional rehabilitation such as orientation and mobility training with a cane or guide dog. * Able to have read to him or her, understand, and sign the informed consent form. * Daily access to an accessible computer with email for study communication, device- use logging and access to device user manual preferred. * Willing and able to complete all testing, training, and follow- up evaluations required by the study protocol, after receiving a short orientation on the use of the device. Exclusion Criteria: * Current oral health problems as determined from the oral health exam which preclude enrollment in the study in the judgment of the Principal Investigator. * Any medical condition that would interfere with performance on the assessments. * Prior use of the BrainPort vision device. * Known neuropathies of tongue or skin tactile system. * Smoke or chew tobacco products less than 12 months prior to study enrollment * Any allergies to nickel or stainless steel * History of seizures or epilepsy. * If female, pregnant. Women of child bearing potential must agree to use appropriate birth control to prevent pregnancy for the duration of the study. * People with implanted electrical medical devices (i.e. pacemaker, deep brain stimulator, cochlear implant). * Psychiatric disease including anxiety disorders and forms of depression (using provided Beck Anxiety Inventory (BAI) and Beck Depression Inventory (BDI- II) as screening tools). * Any disease or condition that prevents understanding or communication of informed consent, study demands and testing protocols including the following: * Cognitive decline including forms of dementia and/or progressive neurological disease * Deafness or selective frequency hearing loss that prevents hearing device alarms and alerts. * Does not speak English * Blindness occurring due to cortical injury (i.e. stroke, traumatic brain injury, etc) * Principal Investigator, in his or her judgment, does not believe the subject is a good candidate for the trial.