Long-term Effect of Eyesight Recovery Methods Employing a Time Varying Magnetic Field and Training in Free Stereo Viewing

Our previous study showed the immediate changes in on eyesight in response to two separate methods, one employing a time-varying magnetic field, and one employing training in free stereo viewing. In the present research, the same changes were reexamined in another group, and, the long-term effects obtained by a combination of both methods was examined. [Method] The subjects were ten adults attending Kurita's eyesight recovery method course trained once a week for 10 weeks. Each subjects received 'magnetic irradiation for three minutes to back of the head' (magnetic irradiation) once a week on odd-numbered weeks (weeks 1, 3, 5, 7, 9) and underwent 'training in free stereo viewing' (3D viewing) once a week on even-numbered weeks (weeks 2, 4, 6, 8, 10). Eyesight was measured before and after training, and the average value of the eyesight measurements of give weeks was used as data. [Result] The results are shown as average values. The magnetic irradiation resulted in improvement in right and left naked-eye eyesight (without glasses) from 0.40 to 0.51 (difference of 0.11, increase of 28%) and the 3D viewing resulted in improvement from 0.42 to 0.51 (difference of 0.09, increase of 21%). The magnetic irradiation changed the right and left corrected eyesight (with glasses) 1.04 to 1.23 (difference of 0.0.19, increase of 18%), and the 3D viewing changed it from 1.06 to 1.28 (difference of 0.22, increase of 21%). No significant differences were seen between the magnetic irradiation and 3D training in the degrees of increase brought about in the naked-eye eyesight and corrected eyesight. The long-term effects of ten weeks were as follows. Right and left naked-eye eyesight changed from 0.18 to 0.66 (difference of 0.36), for an average increase of 2.36 times (increase of 2.18 between the two average values). Right and left corrected eyesight changed from 0.78 to 1.71 (difference of 0.92), for an average increase of 2.25 times (increase of 2.19 times between the two average values). [Assessment] Both the magnetic irradiation and the 3D training had an immediate effect of eyesight improvement, and there was no significant difference between the efficacies of these methods. The results also suggested that a lont-term effect on eyesight can be expected in using both methods for ten weeks.