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KMID : 1011420180230010019
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Journal of Korean Ophthalmic Optics Society
2018 Volume.23 No. 1 p.19 ~ p.24
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A Study of the Correlation of Static Stereoacuity according to the Astigmatism Power and the Degree of Uncorrected Astigmatism
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Jeong Hyung-Ryul
Jung Su-A
Kim Hyun-Jung
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Abstract
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Purpose: This study investigated the correlation of static stereoacuity with the astigmatism power and the degree of uncorrected astigmatism.
Methods: 38 subjects (mean age: 21.84±2.31 years old) with myopic with-the-rule astigmatism were selected and divided into two groups, under -2.00 DC group (DC < -2.00) and over -2.00 DC group (DC ≥ -2.00), based on the -2.00 D astigmatism. Static stereoacuity was measured by using Frisby Stereotest and compared at the each degree of uncorrected astigmatism (0.00 DC, -0.50 DC, -1.00 DC).
Results: Static stereoacuity statistically significantly decreased in all subjects as the degree of uncorrected astigmatism was increased (p<0.05). There was more decrease of static stereoacuity at the ‘DC ≥ -2.00’ than the ‘DC < -2.00’. with ?1.00 DC uncorrected astigmatism. Static stereoacuity according to both the astigmatism power and the degree of uncorrected astigmatism were all statistically significant positive correlation (p<0.05), particularly showed higher correlation at the ‘DC ≥ -2.00’.
Conclusions: As the degree of uncorrected astigmatism increases, static stereoacuity is decreased. Even if the degree of uncorrected astigmatism is the same, as the higher astigmatism power could result larger decrease of static stereoacuity, it should be prescribed with caution when the astigmatism power is over -2.00 D.
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KEYWORD
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Astigmatism power, Uncorrected astigmatism, Static stereoacuity, Frisby Stereotest
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