10 1 T T T T ToT 16 -- T a 4 seb eee > e lab « o T iobk - z e Ke ul =x ) & = a 4 ® -| e 6k a e e 4k mM 4 Ul) ee e om -2r 8 oe eee ee - 4 * 2 @ CONTROL & IRRADIATED s e Yr 4 a to e +I YEARS WwW Lis) J 4 a e 2b uu e l 4 L 6 { 8 10 l t 12 L i4 16 l is NORTH MARSHALL RADIATED AMERICAN CONTROLS CONTROLS GHRONOLOGICAL AGE (YEARS) Figure 4. Skeletal maturation. Figure 5. Deviation from normal boneage values, 4 to 9 years old. | | | I I Sr 4 4h ul t " s 3r- _ o | “2 Ww x ” — a 2 ° 0 4 a tx — 8 @ CONTROL & RADIATED l I I 2 3 l 4 _ l 5 CHRONOLOGIC AGE (YEARS) Figure 6. Skeletal maturation. and hands showed slight improvementoverlast year. Residual changesin the skin from the previous beta burns were present in 13 Rongelap people andin one Ailingnae individual, mostly on the back of the neck, the antecubital fossae, and the dorsum ofthe feet. These changes were notsevere and consisted grossly of alterations in pigmentation in areas showingslight atrophy and scarring of the skin. In some cases pigment was increased and in others pigmentation had not completely returned. In other instances both pigmentation and lack of it were present in the samelesion, giving a blotchy and uneven color. In only a few + Percent Incidence of Eye Disorders — & 1 0 Table 5 a ° Eye disorder Exposed Unexposed Rongelap Utirik Rongelap Pinguecula Pterygium 9.4 20.9 4.5 9.9 Cataracts Vitreous floaters Retinopathy, arteriosclerotic Arcussenilis 15.7 7.1 2.1 12.5 11.7 0.1 0 7.8 Corneal pigmentation 3.1 0 4.8 77 0 5.8 2.9 1.0 0 cases (several lesions on the dorsum ofthe feet and oneearlesion) was there sufficient scarring to result in adhesionsof the skin to subcutaneoustissues. Biopsies were taken from four lesions and from similar areas in unirradiated individuals for comparison. Microscopically no changes were noted suggestive of neoplastic changes. Some lesions showed thickening of the corium by bands of collagen fibers, but this was no more extensive than that observed in biopsies a year ago. Laboratory Examinations Hematological. As in previousreports, the blood data have been classified according to age and