A Novel Dynamic Random-dot Stereopsis Assessment to Measure the Stereopsis in Intermittent Exotropia

NCT ID: NCT04152122

Last Updated: 2019-11-05

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 133 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2017-02-01
• Study Completion Date: 2018-06-01

Brief Summary

A novel dynamic random-dot stereopsis test that included motion + disparity (MD), motion (M), and disparity (D), in which the disparity cues range from 200 to 1200 arc-seconds was used. The characteristics of preoperative dynamic stereopsis in 83 intermittent exotropia patients and its associations with clinical features were analysed, and the prognosis was followed up on the 1st day and 2nd, 6th and 12nd months postoperatively.

Conditions

Dynamic Stereopsis in Intermittent Exotropia Patients

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

Intermittent exotropia group

Intermittent exotropia group

The dynamic stereopsis test

Intervention Type: DIAGNOSTIC_TEST

The characteristics of preoperative dynamic stereopsis in 83 intermittent exotropia patients and its associations with clinical features were analysed, and the prognosis was followed up on the 1st day and 2nd, 6th and 12nd months postoperatively.

Normal group

Normal group

The dynamic stereopsis test

Intervention Type: DIAGNOSTIC_TEST

The characteristics of preoperative dynamic stereopsis in 83 intermittent exotropia patients and its associations with clinical features were analysed, and the prognosis was followed up on the 1st day and 2nd, 6th and 12nd months postoperatively.

Interventions

The dynamic stereopsis test

The characteristics of preoperative dynamic stereopsis in 83 intermittent exotropia patients and its associations with clinical features were analysed, and the prognosis was followed up on the 1st day and 2nd, 6th and 12nd months postoperatively.

Intervention Type: DIAGNOSTIC_TEST

Eligibility Criteria

Inclusion Criteria

X(T) groups were as follows:

1. near and distance exodeviation angles greater than 5 prism degrees (PD) and alternate cover tests and X(T) diagnosis by an experienced doctor;

2. between 5 and 30 years old;

3. 0.0 or better best corrected visual acuity (BCVA; logMAR, log of the minimum angle of resolution);

4. absence of other ocular disorders or other systemic diseases.

Normal group were as follows:

1. between 5 and 30 years old;

2. 0.0 or better logMAR BCVA;

3. near and distance exodeviation angles less than 5 PD and alternate cover tests; and

4. no history of any ocular pathology or systemic disease.

Exclusion Criteria

X(T) groups were as follows:

1. near and distance exodeviation angles less than 5 prism degrees (PD)

2. younger than 5 or older than 30 years old;

3. less than 0.0 or better best corrected visual acuity (BCVA; logMAR, log of the minimum angle of resolution);

4. has other ocular disorders or other systemic diseases.

Normal group were as follows:

1. younger than 5 or older than 30 years old;

2. less than 0.0 or better best corrected visual acuity (BCVA; logMAR, log of the minimum angle of resolution);

3. near and distance exodeviation angles more than 5 PD and alternate cover tests;

4. has history of any ocular pathology or systemic disease.

• Minimum Eligible Age: 5 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Zhongshan Ophthalmic Center, Sun Yat-sen University

OTHER

Sponsor Role: lead

Responsible Party

Jin Yuan

Clinical Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Zhongshan Opthalmic Center

Guangzhou, Guangdong, China

Countries

China

Other Identifiers

2016MEKY032

Identifier Type: -

Identifier Source: org_study_id