FIELD: physics, optics.
SUBSTANCE: invention relates to ophthalmology and is aimed at facilitating uniform evaluation of spectacle lenses across the entire binocular field of vision, quantitative evaluation of fusion conditions, which is characteristic of binocular vision, which is enabled due to that an optical system is defined using a coordinate system in which the origin is located at the middle point of the centres of rotation of both eyeballs, and the object is accurately defined by the visual direction from the origin. The reference value of the angle of convergence is calculated using visual axes of visual directions to the object which is located at the intersection of visual axes after passing through structural base points of the spectacle lenses. The angle of convergence is calculated between the visual axes passing through spectacle lenses and continuing to the object point of evaluation in a given visual direction, and aberration of convergence is calculated from the difference between the angle of convergence and the reference value θCH0 of the angle of convergence.
EFFECT: providing uniform evaluation of spectacle lenses across the entire binocular field of vision.
7 cl, 27 dwg
