Exercise the Neck to Strengthen the Eyes Defective vision may also be improved by neck exercises:
* Rotate the head in semicircles.
* Move the shoulders clockwise and counter clockwise briskly, drawing them up as far as
possible several times. (This can also be done in the yogic pose, Pranayama.)
* Turn the head to the right and to the left as far as possible several times.
These exercises loosen up tight neck muscles which may restrict blood supply to the head.