Electric Stimulation of the Eye to Improve Vision After Trauma

Inclusion Criteria: * You are 18 years or older. * You have sustained trauma (more than 3 months before this study) OR been diagnosed with Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION) (more than 6 months before this study) OR been diagnosed with Multiple Sclerosis (MS) and suffered visual loss (more than 3 months before this study). * You are willing and able to give written informed consent. * You are able to commit to enrolling in the study during the full time period of up to 6 months. Exclusion Criteria: * You have any other significant ophthalmologic disease or condition (such as glaucoma, retinal degeneration, proliferative diabetic retinopathy, +/- six diopters of myopia, retinal detachment, exudative age-related macular degeneration). * You have amblyopia (lazy eye) in affected eye, previously diagnosed. * You are participating in any other interventional clinical trial. * If you are pregnant OR a woman with childbearing potential who is unwilling to use medically acceptable means of birth control for study duration OR woman unwilling to perform a pregnancy test at study entry/screening. * You are unable to give signed consent due to memory, medical, communication, language, or mental health problems. * You are less than 18 years old. * You are unable or unwilling to complete the evaluation or questionnaire. * Visual acuity better than 20/40 * Inability to detect phosphenes during threshold detection * You are on seizure medications, or have a history of epilepsy.