Intraoperative OCT Guidance of Intraocular Surgery II

Inclusion Criteria: 1. Healthy controls: Healthy eyes without known disease: refractive error including myopia and non-significant cataract is allowed. For selected testing pseudophakia is allowed. 2. Surgeons as research subjects: Adult (≥18 years old) 3. Surgical patients (vitreoretinal surgery): Patients undergoing examination under anesthesia or surgery for vitreoretinal diseases 4. Surgical patients (anterior segment surgery-glaucoma, ocular surface or strabismus requiring extraocular muscle surgery): Include both adults and children. Patient undergoing primary, elective minimally invasive glaucoma surgery, ocular surface surgery, or strabismus surgery. Exclusion Criteria: 1. Healthy controls: Any ocular disease that restricts the ability to perform OCT scanning. Conflict of interest with investigators/study personnel, e.g. a student in the lab of an investigator. 2. Surgeons as research subjects: no specific exclusion criteria. 3. Surgical patients (vitreoretinal surgery): Neonates (\< 4 weeks of age) and patients with any ocular disease that restricts the ability to perform OCT scanning. 4. Surgical patients (anterior segment surgery-corneal and cataract diseases): Pediatric patients: The cornea and cataract surgery studies will be restricted to adults (≥ 18 years). Children do not have cataract surgery typically by residents and therefore would not fit our study design. Similarly pediatric corneal transplants are very rare.