Student Theses, Dissertations and Capstones

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Clinical Vision Research

Copyright Statement

All rights reserved. This publication is intended for use solely by faculty, students, and staff of Nova Southeastern University. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, now known or later developed, including but not limited to photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author or the publisher.

Department

College of Optometry

First Advisor

Cristina L Law

Second Advisor

Bin Zhang

Third Advisor

Kevin Willeford

Publication Date / Copyright Date

2020

Publisher

Nova Southeastern University

Abstract

PURPOSE: The intention of this study was to determine if there was an association between receded near point ofconvergence (NPC) and diagnosis of attention-deficit/hyperactivity disorder (ADHD) in school-agedchildren as compared to neuro-normal children. Differences in accommodative amplitude were investigated as well.

METHODS: This retrospective study was done by analyzing the data from examination records of fifty school-agedchildren between the ages of seven and seventeen. Twenty-five children in the experimental group withADHD were age and gender matched to twenty-five neuro-normal children in the control group. The average of each patient’s NPC break and accommodative amplitude values were used to conduct a t-test which examined if there was an association between them and a diagnosis of ADHD.

RESULTS: There was no significant difference between the average NPC break points of the neuro-normal group and the ADHD group (t(24)=1.06479, p= .14615). There was a significant difference between accommodative amplitude between the two groups t(24)=3.454, p= .0012 p

CONCLUSIONS: It was expected that NPC values would be reduced in children with ADHD as compared to their neuro-normal counterparts, but there was no significant difference found. There was a significant difference inaccommodative amplitudes between the control group and the ADHD group.

Disciplines

Optometry

Keywords

Accommodative amplitude, Attention-deficit/hyperactivity disorder, Near point of convergence

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