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KMID : 1159320150170030299
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Korean Journal of Vision Science
2015 Volume.17 No. 3 p.299 ~ p.309
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The Change of Binocular Visual Function in Mild, Moderate and Severe Glaucoma Patients
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Choi Joo-Hyung
Lee Koon-Ja
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Abstract
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Purpose: To assess binocular vision changes in primary open angle glaucoma (POAG) patients with severity of glaucoma.
Materials and Methods: Forty five subjects with POAG were divided according to mean deviation (MD) into mild (-1.90±1.58 dB, 45.0±10.8 years), moderate (-8.30±3.07 dB, 45.6±10.2 years) and severe (-14.1±1.70 dB, 47.8±11.2 years) group. All glaucoma subjects and age-matched normal subjects underwent binocular visual field testing; phoria angle, NPC (near point of convergence), fusion amplitude, sensory suppression and stereoacuity. All measurements among groups were
statistically compared with the SPSS 21.0.
Results: The patients with mild glaucoma showed significantly increased in near exophoria angle, increased in NPC, decreased in near positive relative convergence, near positive relative convergence and stereoacuity. With the progression of the glaucoma, in the patients with moderate glaucoma decreased far fusional reserve were found and in the patients with severe glaucoma increased far exophoria angle, decreased far positive total convergence, far and near sensory suppression were found, additionally.
Conclusion: Visual functions related to near vision and stereoacuity were decreased in early glaucoma patients and visual functions related to far vision, sensory suppression were additionally decreased with the severity of glaucoma.
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KEYWORD
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Glaucoma, Binocular Visual Function, Near point of convergence, Phoria angle, Stereoacuity
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