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KMID : 1011420150200010061
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Journal of Korean Ophthalmic Optics Society
2015 Volume.20 No. 1 p.61 ~ p.66
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Assessment of Dynamic Stereoacuity of Adults in their 20s’ with Howard-Dolman Test
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심현석:Shim Hyun-Suk
최선미:Choi Sun-Mi/김영청:Kim Young-Cheong
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Abstract
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Purpose: In this study, dynamic stereoacuity of 20s’ adults were measured by using the Howard-Dolman test(HD TEST, Bernell, U.S.A), and compared of male and female. And the correlation between dynamic stereoacuity and PD(pupillary distance), and between dynamic stereoacuity and anisometropia caused by difference in the spherical refractive power of the left and right eyes were analyzed.
Methods: The mean age of 22.68± 0.50(20~29)years old, 20s’ 63 adults (30 male, 33 female) were conducted for this experiments. After the full correction of subject's refractive error, dynamic stereoacuity was measured 5 times for 1 subject at 2.5 m distance using the H-D test. at 2.5 distance.
Results: The mean of dynamic stereoacuity was 28.44±25.03 sec of arc for total subjects, 28.23±23.34 sec of arc for male, and 28.63±26.83 sec of arc for female. In the dynamic stereoacuity classified by the range of inter-pupil distance (IPD), the dynamic stereoacuity was 33.87±18.53 sec for the IPD being under 59.80 mm, 26.24±25.26 sec of arc for 59.81~66.15 mm, 34.60±25.65 sec of arc for over 66.15 mm. However, there were no significant differences between 3 groups (P=0.73, r=0.03). In dynamic stereoacuity classified by the refractive error difference between two eyes, dynamic stereoacuity was 26.81± 24.86 sec of arc for the under 1 D, 41.45±24.18 sec of arc for over 1 D, and there was no significant difference between two groups (P=0.15, r=0.15).
Conclusions: Dynamic stereacuity by the H-D test in 20s adults showed that there was no significant differences between male and female, and PD and anisometropia did not have a significant impact upon the dynamic stereoacuity.
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KEYWORD
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Dynamic stereoacuity, Dynamic stereoacuity test, Howard-Dolman stereo test, Anisometropia
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