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

Sun Yat-sen University

Status: Completed

Conditions: Dynamic Stereopsis in Intermittent Exotropia Patients

Treatments: Diagnostic Test: The dynamic stereopsis test

Study type: Observational

Funder types: Other

Identifiers

NCT04152122

2016MEKY032

Details and patient eligibility

About

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.

Enrollment: 133 patients

Sex: All

Ages: 5 to 30 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

133 participants in 2 patient groups

Intermittent exotropia group

Description:

Intermittent exotropia group

Treatment:

Diagnostic Test: The dynamic stereopsis test

Normal group

Description:

Normal group

Treatment:

Diagnostic Test: The dynamic stereopsis test