24 (7-year and 8-year surveys) have persisted. In comparison with the Greulich and Pyle standards, the skeletal development of Marshallese children was retarded at the same chronological age leveis. In addition, the exposed children were less mature than control children. The retardation was most prominent among those exposed during infancy to the fallout radiation (see Figure 18). Skeletal age values during successive examinations of this particular group of children are shownin Table 15. These data covering the period since 1958 are being published in detail elsewhere.'- Complete tables of anthropometric measurements on the Marshallese children dating back to the early surveys are presented in Appendices |1 through 16. eral observ than Ameg exposed gm (19%). Hal did nor she exposed as Though incidence| of diabetie ing with th the Marsh Opithaimelegical Findings Ophthalmological examinations were carried out in 1964 on 68 exposed, 45 children of exposed, and 190 people in the comparison population; a Figure 18. Brothers. Marked retardation in statural growth is shown by the older (shorter) brother (No. 3. on the nght} who was exposed at age 18 months. The younger by 21 months (No. 83, on the left) is taller by 13 cm. The retarded boy shaws no evidence of hyperthyroidism or skeletal disease clinically, other than markedly delayed caseous Maturanon. total of 303 people. As noted in previous surveys, there was an increased incidence of large corneas and enlarged tortuous retinal vessels and a lower incidence of myopia, strabismus, amblyopia ex anopsia,retinitis pigmentosa, retinoblastoma, and congenital Number ¢ glaucoma. The incidence of arcus senilis is higher in the Marshallese than in similar age groups in the United States, which is in keeping with the gen- Table 15 Skeletal Age Development in Children Born Between July 1952 and February 1953 Subject No Age at Skeletal age (5S.A.) values at succemive examunatioos, years Sex exposure, months CAS =4 yr C.A.=6 yr C.A.=8 yr C.A.=9 yr C.A.= 10 yr 2 3 5 M M M 16 17 16 3% a4 3h 4% 2% 3'4 6 3 34 7 3 3% 8% 3 NE* 6 M 16 3 34 6¥ BY 33 4 955 F M F 20 12 c 3 34 NE 64 NE NE 65 962 380 996 B14 F F F F M 15 2" c c Cc Cc NE NE NE NE 34 NE 6% NE 5% *C.A. =chronological age; NE=not examined: C =not exposed (control). 6 9% 9% 10 TM B4 84 8 64 10 16 io 7% NE 10 9 9 8 NE li 10% j'4 NE 10% 10 Seventh Vitreou