The effect of 6 prism base-out during smartphone use on vergence and accommodation systems
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-ou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Kulliyyah of Allied Health Sciences, International Islamic University Malaysia
2020
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| Online Access: | http://irep.iium.edu.my/82386/ http://irep.iium.edu.my/82386/1/82386_The%20Effect%20of%206%20Prism%20Base-Out%20During%20Smartphone.pdf |
| _version_ | 1848789290036756480 |
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| author | Wan Harun, Maryam Aliya Ithnin, Mohd. Hafidz |
| author_facet | Wan Harun, Maryam Aliya Ithnin, Mohd. Hafidz |
| author_sort | Wan Harun, Maryam Aliya |
| building | IIUM Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T17:54:22Z |
| format | Article |
| id | iium-82386 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T17:54:22Z |
| publishDate | 2020 |
| publisher | Kulliyyah of Allied Health Sciences, International Islamic University Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-823862020-09-08T07:17:56Z http://irep.iium.edu.my/82386/ The effect of 6 prism base-out during smartphone use on vergence and accommodation systems Wan Harun, Maryam Aliya Ithnin, Mohd. Hafidz R Medicine (General) RE Ophthalmology 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. Kulliyyah of Allied Health Sciences, International Islamic University Malaysia 2020-02-25 Article PeerReviewed application/pdf en http://irep.iium.edu.my/82386/1/82386_The%20Effect%20of%206%20Prism%20Base-Out%20During%20Smartphone.pdf 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 https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/415/337 |
| spellingShingle | R Medicine (General) RE Ophthalmology Wan Harun, Maryam Aliya Ithnin, Mohd. Hafidz The effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| title | The effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| title_full | The effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| title_fullStr | The effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| title_full_unstemmed | The effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| title_short | The effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| title_sort | effect of 6 prism base-out during smartphone use on vergence and accommodation systems |
| topic | R Medicine (General) RE Ophthalmology |
| url | http://irep.iium.edu.my/82386/ http://irep.iium.edu.my/82386/ http://irep.iium.edu.my/82386/1/82386_The%20Effect%20of%206%20Prism%20Base-Out%20During%20Smartphone.pdf |