OCT Agreement and Crossed Precision Study

Inclusion Criteria: NORMAL EYES * Subjects who do not have pathology in both eyes Inclusion Criteria: GLAUCOMA * Subjects who have a glaucoma diagnosis Inclusion Criteria: RETINAL * Subjects who have a retinal diagnosis including but not limited to: 1. Diabetic macular edema 2. Dry age related macular degeneration 3. Wet age related macular degeneration 4. Cystoid macular edema 5. Epiretinal membrane 6. Macular hole Inclusion Criteria: CORNEAL * Subjects who has one of these diagnosis: 1. Post status LASIK surgery 2. Keratoconus 3. Other corneal dystrophies or degenerations. Exclusion Criteria: ALL EYES * Subjects who have any of the following conditions 1. Diabetes mellitus (DM) and/or diabetic retinopathy 2. Uncontrolled Hypertension (HT) 3. Cerebral infarction, cerebral hemorrhage, cranial nerve neoplasm and other central nervous system diseases affecting vision 4. Cardiac, hepatic, renal and hematologic diseases 5. A current condition requiring systemic administration of steroid 6. A history of, or currently receiving, anticancer therapy 7. Epileptic seizures which are optically induced 8. Dementia * Subjects who have other life threatening and debilitating systemic diseases Note: Additional criteria may apply