Assessment of Cyclofusion Capabilities of Normal Subjects and Patients With 3D Dynamic Random-dot Stereograms

Cantonal Hospital of St. Gallen

Status: Unknown

Conditions: Cyclofusion Competence

Treatments: Diagnostic Test: measurement of the cyclofusion

Study type: Interventional

Funder types: Other

Identifiers

NCT03322111

2016-02118

Details and patient eligibility

About

With this study the investigator wants measure the individual cyclofusion competence from healthy subjects and patients suffering from Strabismus with a only binocularly visible threedimensional Landolt-C stimulus. For this the participant has to look at a 3-D monitor with shutter glasses. The participant is sitting in 2 meter distance in front of the monitor. On the monitor appears the Landolt-C stimulus as a dynamic Random-Dot Stimulus. As long as the participant can fuse the stimulus he will be able to see the Landolt C-ring threedimensional. The participant is then ask to tell in which direction the notch of the Landolt-C ring points out. Once a critical degree of cyclotorsion is reached the participant will no longer be able to see the Landolt C ring and the individual cyclofusion competence is reached.

Enrollment: 50 estimated patients

Sex: All

Ages: 12+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Visual acuity >0,4; Stereopsis

Exclusion criteria

• Visual acuity <0,4; no Stereopsis

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

---

50 participants in 1 patient group

Cyclofusion

Experimental group

Treatment:

Diagnostic Test: measurement of the cyclofusion