Related Experiment Video
Updated: Mar 13, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
The effectiveness of disc synoptoscope on patients with abnormal binocular vision: a prospective cohort study
Jianglan Wang1, Xin Ma1, Ye Wu2
1Department of Optometry and Visual Science, West China Hospital, Sichuan University, No.17, Block 3, South People Road, Chengdu, 610041, Sichuan Province, China.
Purpose:
We performed a prospective cohort study to evaluate the effectiveness of disc synoptoscope on binocularity in patients with abnormal binocular vision.
Methods:
39 eligible subjects were recruited for visual therapy with disc synoptoscope in treatment group and 38 were just observed as control.
Results:
Simultaneous perception in treatment group was better than controls at 6-month visit (p < 0.05). Fusional amplitude improved in treatment group but decreased in control group at 3- and 6-months visits (p < 0.001). Near and distance stereopsis in treatment group were better than controls at 3- and 6-months (p < 0.05). The improvements of monocular and binocular acuity in treatment group were better than controls at 3- and 6-months (p < 0.05). Postoperative recurrence rate in treatment group was lower than controls (p < 0.05).
Conclusion:
Visual therapy with disc synoptoscope is effective in improving short-term binocular vision for the patients with abnormal binocular vision; disc synoptoscope could serve as an effective home-based visual therapy instrument.

