第一章前言

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秋虫牢繁
7 years ago
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4 张电脑验飞检应华医学杂临 47

5 1 P < 0.01 P <

6 2 49

7 3 a a 20/20 20/15 20/ a 1200 ( Aerospace Ophthalmology, 1998) 4 I ( ) 20/70 20/20 20/ IA 20/200 20/20 20/40 20/ II ( ) /400 20/20-20/ II/III 20/400 20/20-20/ Medical Examination And Standards. AFI January

8 5 Naval Operational Medicine Institute

9 7 2 November Decimal Snellen Metric Visual Angle min / /20 6/ / / /40 6/ / / / Azusa Kikukawa,

11 10 n=40) G n=50) G n=76) % 11.8% 11.8% 7.9% 7.9% 9.3% 11.3% 7.0% 7.0% 2.0% 2.0% 6.1% 14.3% 16.3% 16.3% 22.5% 22.5% 2.6% 18.4% 18.4% 10.0% 10.0% 40.0% 40.0%

13 5. 6. Contrast sensitivity Spatial frequency (cpd ( cpd) Brian H.Tsou

15 12. 58

16 N = 78 Number of Eyes % > D (n =15) Diopters 13. spherical refraction N

17 40 30 Number of Eyes 20 N = % > D (n = 2) Diopters 14. cylindrical refraction N

18 25 20 Number of Eyes N = % > D (n = 14) Diopters 15. G spherical refraction N

19 50 40 Number of Eyes N = % > D (n = 6) Diopters 16. G cylindrical refraction N

20 40 30 Number of Eyes 20 N = % > D ( n = 17) Diopters 17. G spherical refraction N

21 60 50 Number of Eyes N = % > D (n= 14) Diopters 18. G cylindrical refraction N

22 Percent (%) < >44 n = 6 n = 57 n = 49 n = 27 n = 18 n = 9 Age Group

23 ** ** n = 72 Log Contrast Sensitivity Night Vision Day Vision ** Spatial Frequency ( Cycles Per Degree ) 20. log cycles per degree p <

24 ** ** ** n = 100 Log Contrast Sensitivity Night Vision Day Vision ** Spatial Frequency ( Cycles Per Degree ) 21. G log cycles per degree ** p <

25 Log Contrast Sensitivity ** ** n = 152 Night Vision Day Vision ** Spatial Frequency ( Cycles Per Degree ) 22. G log cycles per degree ** p <

26 ** ** ** n = 324 Log Contrast Sensitivity Night Vision Day Vision ** Spatial Frequency ( Cycles Per Degree ) 23. log cycles per degree ** p <

27 * ## * # Aerotransport, n = 72 F5, n = 100 IDF, n = 152 Log Contrast Sensitivity ** ## ** ## Spatial frequency ( Cycles Per Degree ) 24. log cycles per degree * ** p < 0.05; p < 0.01 # ## p < 0.05 P <

28 ## * Aerotransport, n = 72 F5, n = 100 IDF, n = 152 Log Contrast Sensitivity ## Spatial Frequency ( Cycles Per Degree ) 25. log cycles per degree * p < 0.05 # ## p < 0.05 P <

29 2.0 Log Contrast Sensitivity > 38 yrs old, n = 30 < 38 yrs old, n = Spatial Frequency ( Cycles Per Degree ) 26. log cycles per degree 72

30 Log Contrast Sensitivity ** > 38 yrs old, n = 10 < 38 yrs old, n = 88 ** Spatial Frequency (Cycles Per Degree) 27. G log cycles per degree ** p <

31 > 38 yrs old, n = 32 < 38 yrs old, n = 120 Log Contrast Sensitivity Spatial Frequency (Cycles Per Degree) 28. G log cycles per degree 74

32 > 38 yrs old, n = 30 < 38 yrs old, n = Log contrast Sensitivity Spatial Frequency ( Cycles Per Degree ) 29. log cycles per degree 75

33 * > 38 yrs old, n = 10 < 38 yrs old, n = 88 Log Contrast Sensitivity ** Spatial Frequency (Cycles Per Degree) 30. G log cycles per degree * ** p < 0.05; p <

34 2.0 > 38 yrs old, n = 32 < 38 yrs old, n = Log Contrast Sensitivity Spatial Frequency (Cycles Per Degree) 31. G log cycles per degree 77

35 2.0 Log Contrast Sensitivity * ** >38 yrs old, n = 72 <38 yrs old, n = 250 ** Spatial Frequency ( Cycles Per Degree) 32. log cycles per degree * ** p < 0.05; p <

36 >38 yrs old, n = 72 <38 yrs old, n = 250 Log Contrast Sensitivity ** Spatial Frequency ( Cycles Per Degree) 33. log cycles per degree ** p <

37 0.8 VA N = Visual Angle (Log MAR) Spherical Equvalent Value (diopters) 34. visual angle log visual acuity spherical equivalent value = spherical value + 1/2 cylindrical value p < R square = 23.4% 80

38 0.8 VA N = Visual Angle (Log MAR) Age 35. visual angle log visual acuity p < R square = 8% 81

39 -3 N = 332 Spherical Equivalent Value (diopters) Age 36. spherical equivalent value = spherical value + 1/2 cylindrical value P R square = 0.5% 82

40 Visual Angle Vision and Aging Laboratory Department of Psychology University of Calgary ( ) Version /96 0.5A/D tan (0.5 θ) θ degree 1 degree = 60 minutes (1 minute = 60 seconds) Visual Angle ( ) Visual Angle = X 1/X = Decimal fraction (1/X)(20/20) = Snellen s fraction (1/X)(6/6) = Metric fraction 83

41 84

42 SEQ Age LOG_OU visual angle Log MAR log OU_SE SEQ AGE LOG_OU OU_SE 48.4 LOG_OU AGE 28.2 OU_SE 85

43 AGE 5 LOG_OU OU_SE p LOG_OU AGE p OU_SE AGE p AGE OU_SE LOG_OU R square 30.1 Durbin-Watson

44 AGE OU_SE LOG_OU p P

45 Tolerance = 1/VIF 0 1 tolerance 0 tolerance =

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untitled 1 1-1 (Distance Visual Acuity Chart) 1-2 (Near Visual Acuity Chart) 1-3 (contrast sensitivity chart) 1-4 (Ishihara) D- 15 1-5 1-1 (Distance Visual Acuity Chart) 6m 6m 6m 1-1-1 1-1-1 1.0 (1 ) 1-1-2 1-1-2

第一章 前言

第一章前言