Usability and Ergonomic Evaluation of Self-Positioning System for Retinal Imaging

"Up to 60 Subjects will be evaluating for positioning accuracy and comfort by comparing different methods utilizing the PAF device. Some methods of positioning will be applied and compare for each usability factor X, Y, Z location, and fixation.~The patient will be evaluated before pupil dilation. VA and ophthalmic diagnoses will be recorded.~Pupil position will be recorded using 3 commercial off the shelf cameras when the subject is performing simple ergonomic tasks while looking at a screen presenting images. Each testing session will be limited 20 min long. Subjects will be able to rest within the testing session if required. Total session time per patient will not exceed 30 minutes."