Vision measurement is the basis for the study and standardization of visual sciences. Measurement of visual acuity has great value for research and for clinical practice. This paper (1) reviews the fundamental concepts to understand visual sense and the measuring units; (2) presents the fundamental limits to visual performance and the principles of aberration measurement of the eye; and (3) discusses methods for measuring and classifying vision with new technologies.
Vision; Vision tests; Visual acuity; Optics; Refraction; ocular; Visual perception; Form perception; Contrast sensitivity; Pattern recognition, visual
