NCT05603962

The Effectiveness of Visual Training in Convergence Insufficiency Patients

Completed NA Last updated 3 December 2024

What this trial tests

NA trial testing Visual training in Convergence Insufficiency in 12 participants. Completed in 26 June 2024.

Timeline

6 March 2023

Primary endpoint
26 June 2024

26 June 2024

Quick facts

Lead sponsor	National Taiwan University Hospital
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	none
Primary purpose	health services research
Enrollment	12
Start date	6 March 2023
Primary completion	26 June 2024
Estimated completion	26 June 2024
Sites	1 location across Taiwan

Drugs / interventions tested

• Visual training

Conditions studied

• Convergence Insufficiency — all drugs for Convergence Insufficiency →

Sponsor

National Taiwan University Hospital

Who can join

Adults 9 to 30, any sex, with Convergence Insufficiency. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Convergence insufficiency (CI) is one of the most common binocular vision disorders. The prevalence of CI ranges from 3% to 6% in school-aged children. CI symptoms include visual fatigue, headache, blurred vision, and diplopia and could be caused while using near-distance viewing. These symptoms might become more severe with increasing need to perform near-distance tasks. Long-term visual symptoms could result in a negative impact on learning behaviors and work performance in patients. Nowadays, visual training is the main type of management for CI patients clinically; however, the existing training protocol required patients to make several visits to the clinic for visual training, which might increase the burden for patients and result in higher failures in training. Therefore, this study will use a simple training method by utilizing prisms for CI patients to train at home, then compare visual symptoms and binocular vision after the training. In stage I of this study, investigators will recruit 60 symptomatic CI participants aged 9 to 30 years old to do a 6-week visual training with the prisms (15 min/time, 3 times/week). The post-training outcomes will be collected at week 4 and week 6. In stage II, all of the participants will be randomly divided into the "stop training group" and the "continue training group." The participants in the "continue training group" will have the same 6-week prism training and in the "stop training group" will stop all the prism training during this period. The final post-training outcomes of all the participants will be collected again at week 12. In this study, investigators will investigate the effectiveness of the prisms training for 6 weeks and for 12 weeks on visual symptoms and binocular vision in CI patients, and evaluate whether the training effect will be affected by stopping training after 6 weeks.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.