Abstract
The aim of this study was to establish a relationship between nonstrabismic binocular dysfunction and baropodometric parameters. A total of 106 participants underwent binocular vision assessment by evaluating horizontal heterophoria, horizontal and vertical fusional vergence ranges, and vergence facility. Posturography was measured using the FreeMED baropodometric platform. Among the variables that the software calculates are foot surface, foot load, and foot pressure. Our results showed that in the participants with positive fusional vergence (PFV) (near) blur and recovery values outside the norm, there are statistically significant differences between the total foot area (p < 0.05), forefoot area (p < 0.05), forefoot load (p < 0.05), and rearfoot load (p < 0.05), in all of the cases of left foot vs. right foot. In the group of subjects who did not meet Sheard's criterion (distance), that is, those with unstable binocular vision, there was a statistically significant difference (p < 0.01) between maximum left and right foot pressure. In conclusion, our results establish a relationship between nonstrabismic binocular dysfunctions and some baropodometric parameters.
Highlights
In humans, posture can be defined as the body’s position when the subject stands without moving with the feet parallel and without external forces other than gravity that influence his/her body [1]
Our results establish a relationship between nonstrabismic binocular dysfunctions and some baropodometric parameters
This study fully evaluated the participants’ binocular vision to determine the presence of nonstrabismic binocular dysfunctions and analyze whether there was a relationship between the visual system and posture through a correct and balanced footfall
Summary
Posture can be defined as the body’s position when the subject stands without moving with the feet parallel and without external forces other than gravity that influence his/her body [1]. Maintaining posture, balance, and head and eye movements result from afferent cervical information from the vestibular, visual, and proprioceptive systems reaching different parts of the central nervous system (CNS) [2, 3]. Subjects with altered binocular vision reported various symptoms [5] and changes in neck posture. This is due to the adaptation of the head to maintain binocularity and optimize visual acuity, which can cause musculoskeletal problems [6]. These three systems work together to control posture [7]. The visual system is responsible for most sensory perception, and many of our movements are controlled by our eyes [8]
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