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KMID : 0383119570050010113
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Journal of Aerospace Medicine
1957 Volume.5 No. 1 p.113 ~ p.128
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FORM AND COLOR FIEDS IN NORMAL KOREAN PEOPLE
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尹源植/Youn, Won Sik
李海觀
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Abstract
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The first requirement for the diagnosis of a pathologic field is the establishment of a norm. In order to determine such diagnostc scales, the visual fields for form and color stimuli were measured by Brombach perimeter and tangent screen for 224 eyes of 112 normal korean people. Isopters for white (3/330, 1/330 and 1/1, 000), red and blue (5/330, 3/330 and 3/1, 000, respectively) were determined in eight principal meridians with Berens´ spherical test objects. The illumination of 7 foot-candle was maintained.
1. The distribution of examined eyes by age, sex and state of refraction is shown in Table
2. The range, mean, standard deviation and coefficient of variation of each isopter are listed in Table 2-10. The perimetric and campimetric results were combined to one chart (Fig.1) and the range and mean of each field were illustrated in Fig. 2.
From these data, the limits which may be considered to be pathologic, were calculated at 95? and 99% level of confidence and were listed under the 95% and 99% column.
3. The ranking of the average width of the fields is, in order from the widest to the narrowest, 3/330 white, 1/330 white, 5/330 red, 3/330 red, 5/330 blue, 1/1, 000 white, 3/330 blue, 3/1, 000 red and 3/1, 000 blue. When test objects of the same visual angle are considered, the form fields are the largest and the fields for blue are the smallest.
4. The fields for color showed greater variance than the form field and the greatest scatter occured in the field for blue stimuli. The campimetric fields, however, showed smaller scatter regardless of the kinds of stimuli used than the perimetric fields.
5. In general, the myopes have the narrower field than the hyperopes and em-metropes, and this can be demonstrated especially by red test objects in the "temporal and -the nasal meridians.
6. After 40 years of age, the fields showed slight contraction, which can be detected with white test object in the temporal meridian.
7. There were no differences in the width of the fields between males and
females. .
8. Central scotoma was investigated by 0.5/1,000 white and 2/1,000 red and blue respectively. No case showed central scotoma or other abnormal change.
9. The various factors influencing upon the width of fields, e. g. illumination of perimeter, brightness of pre-exposure and surrounding field fixation of the eye, method of exposure, intensity of stimulus, anatomic configuration of orbit etc. were discussed.
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