Human eye laser interference fringe visual perception learning and training instrument

Abstract

The invention discloses a human eye laser interference fringe visual perception learning and training instrument which comprises a light source, an optical system, an interference fringe frequency regulating device, an interference fringe contrast regulating device, an interactive device and a computer, wherein coherent light emitted by the light source passes through the optical system to obtaintwo beams of coherent light and one beam of non-coherent background light, the two beams of coherent light converges at the pupil, and two generated point light sources are in interference, thereby generating interference fringes at the eye ground; the interference fringe frequency regulating device is used for regulating the interval between the two beams of coherent light converging at the pupil, thereby regulating the frequency of the interference fringes; and the interference fringe contrast regulating device is used for regulating the overall contrast of the interference fringes. The instrument disclosed by the invention can directly avoid the influence of aberration and diffraction of a human eye optical system, has no need of complicated aberration measuring and correcting devices,and can project more refined visual stimulation to human eyes so that a subject can more effectively carry out visual perception learning to improve the visual function.

Description

technical field [0001] The invention relates to a human eye laser interference fringe visual perception learning and training instrument. Background technique [0002] The earlier definition of perceptual learning was given by Gibson (1953), that is, perceptual learning is the improvement of the ability to extract information from the external environment, and this learning is the result of the interaction between the subject's practice and physiological maturity. Since Volkman first discovered it in 1858, the internal mechanism and related applications of perceptual learning have been greatly developed. Although it is far from reaching a unified understanding of its essence, the current research recognizes the fact that perceptual learning improves the individual's ability to obtain external information on the one hand, and on the other hand changes and improves the behavioral decision-making mechanism over a long period of time. Its physiological basis is the functional p...

AI Technical Summary

Problems solved by technology

However, this training device has the following defects: (1) Although the wavefront aberration of the human eye can be corrected by using adaptive optics technology, it still cannot overcome the influence of diffraction

(2) The visual target display device in this invention generally utilizes CRT displays, commercial projectors, organic light-emitting displays, etc., and it is difficult to produce high spatial frequency visual stimuli due to the limitation of the resolution of these devices themselves.

(3) The correction effect of the aberration in this invention depends on the measurement of the aberration and the corresponding control method. Due to factors such as the dynamics of the wavefront aberration of the human eye, this measurement and control method is very complicated

These factors have limited the popularization and use of the adaptive optics visual perception training instrument

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