Improving Visual Acuity of Myopes through Operant Training: The Evaluation of Psychological and Physiological Mechanisms Facilitating Acuity Enhancement.

摘要

Many studies have substantiated that unaided visual acuity is an alterable process. If acuity can be enhanced, it could benefit some of the nearly one billion individuals who have myopia or nearsightedness. This study investigated the degree to which repeated attempts to resolve stimuli made progressively smaller facilitated posttraining acuity. Twenty-six subjects were divided among treatment and control groups to investigate the degree to which some of the factors that influence acuity could be trained. Pupillary control training resulted in significant volitional control of pupil size. Neither five days of accommodative range training nor blur interpretation training resulted in significant changes in these facets of acuity. Contrast sensitivity was differentially influenced by acuity training; those receiving either accommodative range or blur training display significant contrast sensitivity enhancement. It may be the recognition component of these regiments that facilitates grating resolution. Keywords: Vision; Therapy. (KT)