Document Type
Thesis
Date of Award
Summer 2019
Degree Name
Master of Science in Biomedical Engineering - (M.S.)
Department
Biomedical Engineering
First Advisor
Tara L. Alvarez
Second Advisor
Xiaobo Li
Third Advisor
Elio M. Santos
Fourth Advisor
Mitchell Scheiman
Abstract
Vergence is a form of eye movement in which the eyes move in opposite directions to minimize retinal disparity. It allows an object at different distances from a viewer to appear single during binocular vision by centering the image on the fovea of each retina. Convergence insufficiency (CI) is a binocular disfunction in which blurry and double vision is a symptom. Office-based Vergence/Accommodative Therapy (OBVAT) has been shown to be effective in treating CI. A randomized clinical trial was designed to study fifty participants with CI before and after therapy using randomized therapy treatment (active and placebo), standardized clinical definitions, and a masked clinician to measure clinical outcomes. A haploscope was used to independently show stimuli to the left and right eye of the participants. A video-based eye tracker was used to capture eye-movement data, and a custom MATLAB program was used to analyze the following data parameters: latency, time to peak velocity, peak velocity, and final amplitude. Eye-movement data parameters significantly improved post OBVAT when comparing baseline and post treatment results. The results after Office-Based Placebo Therapy (OBPT) were compared to OBVAT results, and a statically significant difference was found. Results support that OBVAT leads to a significant improvement in vergence dynamics post therapy compared to baseline measurements.
Recommended Citation
Crincoli, Patrick C., "Longitudinal investigation of disparity vergence in young adult convergence insufficiency patients" (2019). Theses. 1683.
https://digitalcommons.njit.edu/theses/1683
