Effects of astigmatic axis orientation on postural stabilization with stationary equilibrium
Abstract
We evaluated 15 healthy participants by assessing their maintenance of postural control while standing on a platform stabilometer for 1 min under the following conditions: eyes open; eyes open with + 3.00 D on both eyes on same directions (45, 90, 135, 180 degree axis); right eye on 45 degree axis and left eye on 135 degree axis (inverted V-pattern), and right eye on 135 degree axis and left eye on axis 45 degree axis (V-pattern). The differences in the linear length, area and maximum velocity of center of pressure during postural control before and after the six types of positive cylinder-oriented axes were analyzed. Comparing the antero-posterior lengths and antero-posterior maximum velocities, there were significant differences between the V-pattern condition and the six other conditions. Astigmatic defocus in the antagonistic axes conditions, particularly the V-pattern condition, affects postural control of antero-posterior sway (143/150).
- Publication:
-
Optical Review
- Pub Date:
- February 2018
- DOI:
- 10.1007/s10043-017-0383-2
- Bibcode:
- 2018OptRv..25...27K
- Keywords:
-
- Postural control;
- Cylinder lenses;
- Astigmatic axis;
- Visual acuity;
- Stereognosis