Clinical Research Directory

All Participants: Inclusion Criteria: * able to provide informed consent Exclusion Criteria: * potentially confounding ocular conditions, such as: glaucoma, current corneal injury, retinal damage, diabetes, corrected distance visual acuity worse than 20/40 * eyes that have had intraocular surgery or retinal surgery, other than cataract surgery Participants with Alzheimer's Disease: Inclusion: \- mild cognitive impairment (MCI) or dementia due to Alzheimer's disease, confirmed by A/T/N classification Healthy Controls: Exclusion: \- has a memory or other neurodegenerative diagnosis (including mild cognitive impairment, Parkinson's disease, Alzheimer's disease, traumatic brain injury, post-traumatic stress disorder) If two eyes satisfy the inclusion / exclusion criteria, both eyes will be included in the study. If only one eye satisfies the criteria, only the qualifying eye will be included in the study.