Convergence Insufficiency
Conditions
Brief summary
The purpose of this research study is to see how well the treatment of a participant's eye coordination and/or focusing problems improves eye muscle responses and symptoms of eyestrain. We will use an entertainment device called a virtual reality headset to play a custom-designed video game to find out how well the treatment of binocular vision improves a participant's coordination and/or focusing problem. The virtual reality headset uses eye-trackers to monitor progress in a totally objective manner. Objective testing allows the doctor to determine the results without relying on a participant's ability to answer questions or respond verbally in any way. We will compare the results of a participant before and after playing the video game.
Interventions
DEVICEVirtual Eye Rotation Vision Exercises (VERVE)
A video game designed with elements of vision therapy will be delivered to participants utilizing consumer-available virtual reality headsets (VIVE Pro Eye).
Sponsors
New Jersey Institute of Technology
Salus University
OculoMotor Technologies
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Masking description
Examiner (Outcomes Assessor) will be masked by pooling participants from another study.
Eligibility
Sex/Gender
ALL
Age
9 Years to 35 Years
Healthy volunteers
No
Inclusion criteria
* Age 9 years and older * CISS score ≥ 16 * Best-corrected distance visual acuity of 20/25 or better in each eye * Random dot stereopsis appreciation of 500 seconds of arc or better * Parent or subject understands the protocol and is willing to enroll in the study
Exclusion criteria
* Constant strabismus at distance or near * Vertical heterophoria ≥ 2 ∆ at distance or near * ≥ 2 line interocular difference in best-corrected visual acuity * Near point of accommodation \> 20 cm in either eye as measured by push-up method * Manifest or latent nystagmus * Non-strabismic binocular vision and accommodative disorders associated with known disease of the brain * Diseases known to affect accommodation, vergence, or ocular motility such as multiple sclerosis, Graves orbitopathy, myasthenia gravis, diabetes mellitus, Parkinson disease * Any ocular or systemic medication known to affect accommodation or vergence such as anti-anxiety agents (e.g., Librium or Valium), anti-arrhythmic agents (e.g., Cifenline, Cibenzoline), anti-cholinergics, bladder spasmolytic drugs (e.g., Propiverine), hydroxychloroquine, chloroquine, phenothiazines (e.g., Compazine, Mellaril, Thorazine), tricyclic antidepressants (e.g., Elavil, Nortriptyline, Tofranil) * Inability to comprehend and/or perform any study-related test or procedure
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Positive Fusional Vergence | up to 4 weeks post-therapy | Normal range is \>15 Prism Diopters |
| Near Point of Convergence | up to 4 weeks post-therapy | Normal range is \< 6 cm |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Convergence Insufficiency Symptom Survey (CISS) | up to 4 weeks post-therapy | Normal range is \< 21 for adults and \< 16 for pediatrics |
| Vision Quality of Life with Time Survey (VisQuaL-T) | up to 4 weeks post-therapy | Normal range is \> 2.5 |
| Core Elements of Gaming Experience Questionnaire | up to 4 weeks post-therapy | User experience rating |
Countries
United States
Contacts
Primary ContactChang Yaramothu, PhD
Outcome results
None listed