, oF 20/10 | 1O-- T T T T T T 1 4 co COMBINED © EXPOSED _ _ cUuRVE FOR AMERICANS (DUANE®®) r=0,73** y= — 36.74 4+3,31x%- 0.02%? i 20 20/57 T ® UNEXPOSED 10.5 20 301 | 8 40 Se 5 420/105 60 J a ® UNEXPOSED ° EXPOSED : 90— TOL 43.5 20/152 Boe ' | 30 40 50 |____t 60 AGE 70 80 ~ 90H ##* CORRELATION WITH AGE SIGNIFICANT AT | %LEVEL ge | # * CORRELATION WITH AGE ' SIGNIFICANT AT 1% LEVEL = 100! 4 7.0 601 © COMBINED r=: 0.6905 ** y= 21543 - 1.543% +.0289 x2 BO 50 lool |__136/200 20 90 l 30 | (0 ] ® UNEXPOSED © EXPOSED T ] 0 COMBINED ! r 13 100 90- r= 0.6653" : L 60 AGE 14, 1 7m 2 B80 LJ, 30 T T © EXPOSED ) 20% 0 COMBINED r=0.5507 ** y= cb.677 + 0.743 x 80 20 “|! | 12 75 I 70 30 | 3, a ° a | ‘ —_ SOh 21.5 & | 5 : H wi ao 60 60 PERCENT 40K PERCENT 50 ® UNEXPOSED y= 38.266 - 1.229% + 0.0237x2 I us l 40 ae Figure 39. Accommodauon(1964). Figure 38. Visual acuity (1964). Or 147 70 — mer | site 80 | 90 ‘oo DIGPTERS ,5 50 6ole | ** CORRELATION WITH AGE SIGNIFICANT AT 1% LEVEL t 30 1 40 L 50 60 AGE 1 Oh 70 | 80 Figure 40. Hearing (average decibel loss). Lao 90 6 | 30 4 * CORRELATION WITH AGE SIGNIFICANT AT 1% LEVEL 40 50 l 60 AGE 70 l ao Figure 41. Systolic blood pressure. | 90 Jg9 SYSTOLIC PRESSURE (mm) ry PERCENT zOz SNELLENS SCORE I