Through acombination of lectures and clinical skills sessions, this module willenable students to develop their understanding of optics andrefraction introduced earlier in the course (ORTH138). Students willdevelop knowledge from modules in year one and two, inorder to learn subjective and objective refraction techniques, aswell as develop a detailed understanding of the optical principles thatunderpin clinical refraction and prescription of spectacles. The module willalso introduce students to low vision assessment, and the legal aspects ofprescribing optical corrections relevant to orthoptic clinical practice. Assessment of thismodule consists of a practical exam that tests the student’s ability to performsubjective and objective retinoscopy to a competent level, and a written examdesigned to assess detailed theoretical and legal aspects of the module.