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مقاله
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Abstract
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Title:
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Comparison of Amplitudes of Fusional Vergence in Patients with Asthenopic and Asymptomatic Near Exophoria
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Author(s):
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Mohammad Reza Sedaghat MD ; Mojtaba Abrishami MD
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Presentation Type:
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Oral
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Subject:
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Strabismus & Neuro-ophthalmology
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Others:
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Presenting Author:
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Name:
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Mojtaba Abrishami
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Affiliation :(optional)
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Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran ; Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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E mail:
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mojtaba_abrishami@yahoo.com
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Phone:
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02166481649
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Mobile:
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09155207987
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Purpose:
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To compare fusional vergence amplitudes in patients with symptomatic and asymptomatic near exophoria.
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Methods:
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This cross sectional descriptive analytic study included 102 patients with near exophoria and asthenopia and 86 with asymptomatic near exophoria, all of whom were aged 15-35 years and had best corrected far visual acuity better than 20/25. Far and near fusional vergence amplitudes were evaluated in all patients. The subjects were not hyperopic.
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Results:
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We observed significant between group differences in near negative fusional vergence (NFV) break (15.91±4.90 PD vs. 14.73±4.60 PD , p=0.013), near NFV recovery (12.33±3.90 PD vs. 13.79±3.97PD, p=0.009), and far NFV recovery (5.58 ± 3.50PD vs. 4.50±2.70PD – p=0.019). Other vergence amplitudes did not differ significantly.
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Conclusion:
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Although previously it was assumed that asthenopia is related to convergence insufficiency, it seems that asthenopia in patients with near exophoria may be related to increased amplitudes of negative vergence.
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Attachment:
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