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

Inclusion criteria

X(T) groups were as follows:

• near and distance exodeviation angles greater than 5 prism degrees (PD) and alternate cover tests and X(T) diagnosis by an experienced doctor;
• between 5 and 30 years old;
• 0.0 or better best corrected visual acuity (BCVA; logMAR, log of the minimum angle of resolution);
• absence of other ocular disorders or other systemic diseases.

Normal group were as follows:

• between 5 and 30 years old;
• 0.0 or better logMAR BCVA;
• near and distance exodeviation angles less than 5 PD and alternate cover tests; and
• no history of any ocular pathology or systemic disease.

Exclusion criteria

X(T) groups were as follows:

• near and distance exodeviation angles less than 5 prism degrees (PD)
• younger than 5 or older than 30 years old;
• less than 0.0 or better best corrected visual acuity (BCVA; logMAR, log of the minimum angle of resolution);
• has other ocular disorders or other systemic diseases.

Normal group were as follows:

• younger than 5 or older than 30 years old;
• less than 0.0 or better best corrected visual acuity (BCVA; logMAR, log of the minimum angle of resolution);
• near and distance exodeviation angles more than 5 PD and alternate cover tests;
• has history of any ocular pathology or systemic disease.