Through a range of didactic lectures, tutorials and dedicated clinical skills sessions the module will introduce fundamental principles of orthoptics and how to clinically investigate normal binocular vision, visual function and ocular motility. In addition, the module will include essential mandatory training which is required for clinical practice. This is the first module in a series of six (followed by ORTH 140, ORTH 237, ORTH 240, ORTH 330, ORTH 335) that occur in each semester of the programme to deliver the skills and underpinning theoretical knowledge for orthoptic practice. Students will engage in work-based clinical activity through simulation, remote placement and attendance at an NHS clinical site. At the end of this module, successful students will be able to use the majority of orthoptic clinical tests in the investigation of patients. These skills will form the foundation for students learning how to investigate abnormal vision and ocular motility defects later in the course. The assessment of the module will consist of two unseen online written exams during the semester to demonstrate understanding of the theory that underpins orthoptic practice in addition to a clinical portfolio and practical exam that will ensure competence in the use of taught clinical skills.