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KMID : 1159320190210020201
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Korean Journal of Vision Science
2019 Volume.21 No. 2 p.201 ~ p.208
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Effect of Undercorrection on Visual Functioning Using Spectacle Lens and Multifocal Contact Lens in Young Adults
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Park Inn-Jee
Chu Byoung-Sun
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Abstract
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Purpose : To investigate the effect of using multifocal soft contact lens on visual functioning compared to other vision correction methods, such as no correction, undercorrection with +1.00 D spectacle lens
Methods : Seventeen individuals were recruited to participate in this study. The age range of the 17 participants (mean age of 23.6±2.1 years) who have less than sphere refractive error within the range of ±1.00 D with less than -0.75 D of astigmatism. Repeated measurements were performed using three different correction options; no correction (NC), correction using multifocal contact lenses (CM) with a plano power for distance and addition up to +1.00 D and undercorrection using +1.00 D spectacle lens (UL). Distance visual acuity with high contrast (100%) and low contrast (10%) vision chart, and distance contrast sensitivity, and near visual acuity were measured.
Results : The type of vision correction had a significant effect on distance visual acuity measured with the high and low contrast vision chart (p<0.01). There was no significant difference in near visual acuity among the correction types (p=0.34), the type of vision correction worn had a significant effect on distance contrast vision chart (p=0.01).
Conclusion : Multifocal contact lens did not alter the best corrected visual acuity and contrast sensitivity and maintain good overall visual functioning that are comparable to no correction. Therefore, using this center near multifocal contact lens in young adults can provide the high quality visual acuity for distance and near and relieve the accommodative burdens on near tasks.
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KEYWORD
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Multifocal soft contact lens, Undercorrection, Visual functioning
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