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KMID : 1011420100150030241
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Journal of Korean Ophthalmic Optics Society
2010 Volume.15 No. 3 p.241 ~ p.245
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Research on a New Vision Test Chart Measuring Visual and Spatial Sense of Moire Fringes
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Woo Hyun-Kyung
Lee Seong-Jae
Jeong Youn-Hong
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Abstract
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Purpose: In this work we suggested a grating chart of vision test which could be used to measure the sense of distance and motion of object.
Methods: A couple of gratings with periodic structure were fabricated. Through a lens the grating images showing geometrical shapes were projected on a vision test chart in order to form a new grating chart of vision test. In rotating and translating the gratings the examinee perceived the variation of position of gratings by the variation of the sense of distance and motion.
Results: The results of the sense of distance and motion measured in rotating and translating the gratings showed the average errors of ~2.98% and ~1.73% at q=15o respectively compared to calculated values.
Conclusions: The grating chart of vision test suggested in this work can be used as a new test chart that lets an examinee perceive a sense of distance and motion of object.
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KEYWORD
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Sense of space, Sense of distance, Vision test chart, Rotational displacement, Translational displacement, Sinusoidal gratings
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