The effect of 6 prism base-out during smartphone use on vergence and accommodation systems

Wan Harun, Maryam Aliya and Ithnin, Mohd. Hafidz (2020) The effect of 6 prism base-out during smartphone use on vergence and accommodation systems. International Journal of Allied Health Sciences (IJAHS), 4 (1). pp. 1011-1016. E-ISSN 2600-8491

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Abstract

Introduction: Prism is used in binocular vision assessment and visual therapy. The short-term use of prism, particularly base-out prism on vergence and accommodation system, was not well-explained in the previous investigations. Aim: This current study aimed to assess the effect of 6 prism base-out for 15 minutes on vergence and accommodation system during the utilization of smartphone. Methodology: Thirty normal participants were recruited in this quasi-experimental study. All participants wore 6 prism-base out for 15 minutes while using smartphone at 40cm. Near positive fusional vergence (PFV) and amplitude of accommodation (AA) were measured before and after 15 minutes of 6 prism base-out wear during smartphone usage. Results: The results showed no significant difference for both parameters measured when comparison was made between before and after prism base-out inducement in front of eye. Conclusion: The vergence and accommodation systems presented in this study were almost identical among normal subjects after inducement of 6 prism base-out for 15 minutes during watching smartphone.

Item Type:	Article (Journal)
Additional Information:	7611/82386
Uncontrolled Keywords:	Positive fusional vergence (PFV), prism base-out, amplitude of accommodation (AA)
Subjects:	R Medicine > R Medicine (General) R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science Kulliyyah of Allied Health Sciences
Depositing User:	Dr Mohd Hafidz Ithnin
Date Deposited:	08 Sep 2020 15:17
Last Modified:	08 Sep 2020 15:17
URI:	http://irep.iium.edu.my/id/eprint/82386

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