The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems
Introduction: Prisms is used for binocularity diagnosis and vision therapy in optometry particularly in treating symptomatic vision anomalies such as divergence excess, convergence insufficiency, nystagmus and concomitant as well as incomitant strabismus. This utilization of base-out prism in the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Kulliyyah of Allied Health Sciences, International Islamic University Malaysia
2020
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| Online Access: | http://irep.iium.edu.my/82390/ http://irep.iium.edu.my/82390/1/82390_The%20effect%20of%206-prism%20base-out.pdf |
| _version_ | 1848789290930143232 |
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| author | Abu Bakar, Nur Munirah Ithnin, Mohd. Hafidz |
| author_facet | Abu Bakar, Nur Munirah Ithnin, Mohd. Hafidz |
| author_sort | Abu Bakar, Nur Munirah |
| building | IIUM Repository |
| collection | Online Access |
| description | Introduction: Prisms is used for binocularity diagnosis and vision therapy in optometry particularly in
treating symptomatic vision anomalies such as divergence excess, convergence insufficiency, nystagmus
and concomitant as well as incomitant strabismus. This utilization of base-out prism in the alteration of
vergence and accommodation system is not well explored especially on normal binocular vision. This
study aimed to assess the effect of prism base-out inducement on vergence and accommodation among
normal binocular vision system. Aim: To compare the value of positive fusional vergence (PFV) and
amplitude of accommodation (AA) before and after introduction of 6 prism base-out (BO) at fixation
distance of 6m for 15 minutes. Methodology: Thirty participants were recruited in this quasiexperimental study and all of the participants wore the 6 prism BO for 15 minutes while watching movie
at 6m. AA and PFV at 6m and 40cm were measured pre- and post-watching movie at 6m with 6 prism BO
inducement. Results: The AA and PFV before and after intervention were then being compared and the
results showed that there were insignificant changes (p>0.05) in AA and PFV of both eyes. Conclusion:
The results suggested that the utilization of 6 prism BO in 15 minutes did insignificantly alter
accommodation and vergence system. |
| first_indexed | 2025-11-14T17:54:23Z |
| format | Article |
| id | iium-82390 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T17:54:23Z |
| publishDate | 2020 |
| publisher | Kulliyyah of Allied Health Sciences, International Islamic University Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-823902020-09-08T07:46:00Z http://irep.iium.edu.my/82390/ The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems Abu Bakar, Nur Munirah Ithnin, Mohd. Hafidz RE Ophthalmology Introduction: Prisms is used for binocularity diagnosis and vision therapy in optometry particularly in treating symptomatic vision anomalies such as divergence excess, convergence insufficiency, nystagmus and concomitant as well as incomitant strabismus. This utilization of base-out prism in the alteration of vergence and accommodation system is not well explored especially on normal binocular vision. This study aimed to assess the effect of prism base-out inducement on vergence and accommodation among normal binocular vision system. Aim: To compare the value of positive fusional vergence (PFV) and amplitude of accommodation (AA) before and after introduction of 6 prism base-out (BO) at fixation distance of 6m for 15 minutes. Methodology: Thirty participants were recruited in this quasiexperimental study and all of the participants wore the 6 prism BO for 15 minutes while watching movie at 6m. AA and PFV at 6m and 40cm were measured pre- and post-watching movie at 6m with 6 prism BO inducement. Results: The AA and PFV before and after intervention were then being compared and the results showed that there were insignificant changes (p>0.05) in AA and PFV of both eyes. Conclusion: The results suggested that the utilization of 6 prism BO in 15 minutes did insignificantly alter accommodation and vergence system. Kulliyyah of Allied Health Sciences, International Islamic University Malaysia 2020 Article PeerReviewed application/pdf en http://irep.iium.edu.my/82390/1/82390_The%20effect%20of%206-prism%20base-out.pdf Abu Bakar, Nur Munirah and Ithnin, Mohd. Hafidz (2020) The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems. International Journal of Allied Health Sciences (IJAHS), 4 (1). pp. 1017-1022. E-ISSN 2600-8491 https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/415/337 |
| spellingShingle | RE Ophthalmology Abu Bakar, Nur Munirah Ithnin, Mohd. Hafidz The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| title | The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| title_full | The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| title_fullStr | The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| title_full_unstemmed | The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| title_short | The effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| title_sort | effect of 6-prism base-out at 6-metre fixation on vergence and accommodation systems |
| topic | RE Ophthalmology |
| url | http://irep.iium.edu.my/82390/ http://irep.iium.edu.my/82390/ http://irep.iium.edu.my/82390/1/82390_The%20effect%20of%206-prism%20base-out.pdf |