Biofeedback of accommodation to reduce myopia: a review.

Since the first report in 1970 of biofeedback to train voluntary control of accommodation, the use of biofeedback to train accommodation has progressed from basic research demonstrations to the clinical treatment of myopia. The initial reports showed that voluntary control of accommodation could be trained easily and accurately. The next series of investigations were into the efficacy of the technique for training low (less than 1.00 D), functional myopes. The research showed that functional myopia could be reduced with biofeedback training of accommodation. Finally, the technique has expanded into training for a wide range of myopes from children to senior citizens. The results demonstrate the effectiveness of biofeedback in reducing myopia by training voluntary control of accommodation.