The Refraction Assessment and the Electronic Trial Frame Measurement during Standing or Sitting Position Can Affect Postural Stability

Massimo Rossato, Alessandra Nart, Giuseppe Messina, Francesco Favro, Valentina Rossato, Enxhi Rrutja and Vincenzo Biancalana
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Massimo Rossato: Department of Biomolecular Sciences, University of Urbino, 61029 Urbino, Italy
Alessandra Nart: Department of Biomolecular Sciences, University of Urbino, 61029 Urbino, Italy
Giuseppe Messina: Sport and Exercise Sciences Research Unit, Department of Psychological, Pedagogical and Educational Sciences, University of Palermo, 90128 Palermo, Italy
Francesco Favro: Department of Biomedical Sciences, School of Human Movement Science, University of Padova, 35128 Padova, Italy
Valentina Rossato: Department of Medicine, School of Medicine, University of Padova, 35128 Padova, Italy
Enxhi Rrutja: School of Science, Optics and Optometry, University of Florence, 50121 Firenze, Italy
Vincenzo Biancalana: Department of Biomolecular Sciences, University of Urbino, 61029 Urbino, Italy

IJERPH, 2022, vol. 19, issue 3, 1-11

Abstract: Vision has been shown to influence body posture. The purpose of this study is to investigate the correlations between visual acuity and body postural control both in a standing and seated position. This cohort study included 37 patients examined using Adaptica’s (Italy) Kaleidos and VisionFit. Objective refraction was measured with Kaleidos both in a standing and seated position by the same operator and in the same environmental conditions. The parameters obtained with the device were binocular refraction, monocular refraction, pupil distance, pupil size, head tilt, gaze, phorias, and tropias. The results obtained were then subjectively tested using VisionFit: an electronic trial frame with phoropter functionalities. The study’s outcome revealed that the differences in the visual acuity parameters obtained in standing and seated positions were statistically significant; the Student’s t -test showed a p -value < 0.001 in all parameter averages. Automated refraction is widely being performed and postural control can affect the visual acuity parameters; therefore, it is relevant to consider the possibility of measuring in orthostatism. It might be appropriate to take into account the possibility of measuring in orthostatism and wearing trial frames in orthostatic conditions as well as walking freely around the room, looking outside of a window, sitting, and reading.

Keywords: vision; posture; postural balance; posture physiology; computerized occlusion analysis; temporomandibular disorders (TMD); refractometry; prescribing glasses (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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