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The Comparasion of the Dynamic Stereoacuity with Two-Rods Test and Three-Rods Test
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 Title & Authors
The Comparasion of the Dynamic Stereoacuity with Two-Rods Test and Three-Rods Test
Shim, Hyun-Suk; Kim, Sang-Moon; Kim, Sang-Hyun; Kim, Young-Cheong;
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 Abstract
Purpose: On this study, we measured and compared the dynamic stereoacuity by two-rods test (Howard-Dolman Test) and three-rods test. And we analyzed the correlation between PD and refractive error with dynamic stereoacuity. Methods: Dynamic stereoacuity of two-rods test and three-rods test at 2.5 m distance for 93 adults 93 (50 males, 43 females), mean age of (19~32) years old, were measured 5 times for two tests. Results: The mean of dynamic stereoacuity measured by two-rods test and three-rods test were of arc and of arc for total subjects, respectively. The mean of male and female were of arc and , respectively. Three-rods test showed better dynamic stereoacuity than two-rods test, but there was no statistically significant difference (p>0.05). For the average standard deviation of PD between 60.63 mm~66.19 mm, dynamic stereoacuity fo two-rod test and three-rod test were of arc and of arc, respectively. The results showed statistically significant difference (p<0.05), but the relationship between dynamic stereoacuity and PD was not great. Comparison between two tests on the basis of refractive error, dynamic stereoacuity by three-rods test was better than by two-rods test with no significant difference between both tests (p>0.05) and there was little correlation between refractive error and two dynamic stereoacuity. Conclusions: Three-rods test showing lower stereoacuity than two-rods tests could measure the lower minimum threshold of dynamic stereoacuity. It was found that both tests can be applied to dynamic stereoacuity test as a standard test, and PD and refractive error was found that little effect upon the dynamic stereoacuity. PD and refractive error was found that little effect upon the dynamic stereoacuity.
 Keywords
Two-Rods Test;Three-Rods Test;Howard-Dolman Test;Dynamic stereoacuity;Dynamic stereoacuity test;
 Language
Korean
 Cited by
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