TY - JOUR
T1 - Utility of a cheiroscope to test for simultaneous perception and sensory fusion
AU - Kakeue, Ken
AU - Mihara, Miharu
AU - Hayashi, Atsushi
N1 - Publisher Copyright:
© 2021 Optometry Australia.
PY - 2023
Y1 - 2023
N2 - Clinical relevance: The synoptophore has been used clinically to assess simultaneous perception and sensory fusion in strabismic patients; however, due to suppression or the visual condition of patients with normal stereopsis, a synoptophore does not always detect simultaneous perception or sensory fusion. A cheiroscope may be a better alternative. Background: The aim of this work was ro determine whether a cheiroscope could be useful for examining simultaneous perception and sensory fusion in strabismus patients. Methods: Thirty-three patients with strabismus who could undergo cheiroscopic tracing were categorised into two groups: the intermittent exotropia group (XT; n = 19; mean age 9.8 ± 5.6 yrs, range 5-23 yrs) and the esotropia group (ET; n = 14; mean age 10.2 ± 6.0 yrs, range 4-23 yrs). Two sizes of square line drawings (20° and 6°) were used for the cheiroscopic tracing. The cheiroscopic tracing results were compared with those of synoptophore testing for simultaneous perception and sensory fusion. Results: The rate of cheiroscopic tracing of detecting sensory fusion was significantly higher than that of the synoptophore. With the synoptophore, simultaneous perception was detected in 89.5% and 85.7% of the XT and ET patients, and sensory fusion was detected in 73.7% and 71.4%, respectively. The synoptophore identified 11 patients who had no simultaneous perception or sensory fusion. Among them, eight patients were associated with suppression and two patients were 4 years old. Conclusion: Cheiroscopic tracing is useful for determining the presence of simultaneous perception and sensory fusion if they are not detected by a synoptophore due to age < 5 years or suppression.
AB - Clinical relevance: The synoptophore has been used clinically to assess simultaneous perception and sensory fusion in strabismic patients; however, due to suppression or the visual condition of patients with normal stereopsis, a synoptophore does not always detect simultaneous perception or sensory fusion. A cheiroscope may be a better alternative. Background: The aim of this work was ro determine whether a cheiroscope could be useful for examining simultaneous perception and sensory fusion in strabismus patients. Methods: Thirty-three patients with strabismus who could undergo cheiroscopic tracing were categorised into two groups: the intermittent exotropia group (XT; n = 19; mean age 9.8 ± 5.6 yrs, range 5-23 yrs) and the esotropia group (ET; n = 14; mean age 10.2 ± 6.0 yrs, range 4-23 yrs). Two sizes of square line drawings (20° and 6°) were used for the cheiroscopic tracing. The cheiroscopic tracing results were compared with those of synoptophore testing for simultaneous perception and sensory fusion. Results: The rate of cheiroscopic tracing of detecting sensory fusion was significantly higher than that of the synoptophore. With the synoptophore, simultaneous perception was detected in 89.5% and 85.7% of the XT and ET patients, and sensory fusion was detected in 73.7% and 71.4%, respectively. The synoptophore identified 11 patients who had no simultaneous perception or sensory fusion. Among them, eight patients were associated with suppression and two patients were 4 years old. Conclusion: Cheiroscopic tracing is useful for determining the presence of simultaneous perception and sensory fusion if they are not detected by a synoptophore due to age < 5 years or suppression.
KW - Cheiroscope
KW - fusion
KW - simultaneous perception
KW - strabismus synoptophore
UR - http://www.scopus.com/inward/record.url?scp=85121379672&partnerID=8YFLogxK
U2 - 10.1080/08164622.2021.2011150
DO - 10.1080/08164622.2021.2011150
M3 - 学術論文
C2 - 34875209
AN - SCOPUS:85121379672
SN - 0816-4622
VL - 106
SP - 56
EP - 61
JO - Clinical and Experimental Optometry
JF - Clinical and Experimental Optometry
IS - 1
ER -