> tent hy A teeel F eM: aaN ®. me *2. a eget et OC Figure 19. Section of skin from heta-burn area on back of neck of Heyear-old waman (Na 34) at 10 veans alter ex. Figure 17. Porsisting depigmented areas, 6 months aher cspenuin, in ates of teat severe bets! posuce (1U00e }. Nate atrephyaf epidermis with narrow. ing of steatuin yranulosad and fingerlike projections of rete pews, Slight atrepiy of the sweat gland ducts is alee present tt Figure 88. Piginented nevuslike lesions in prevunus beta-Lan area of new k (subject No. 7H). U Fieure 15. Bar lesien healed. 6 months after cxpeeure, with cousider abide wirting.* the neck regions chat sustained severe beta burns suggests What the devclopmeat of benign lesions may have been enhanced by the skin ex posure (ee Figure 20), Possible cocarcinedenic factors such as the aliraviolet radiation io trapical sunlight and skin irritation from coral, iui, and infections may moder the development of maligaant changes inthe shinnore bhely, but the dark piguicatstion should olor some protocdon, as i has been shown that skin cuicer is less prevalent among Neyrocs, E. OPHTHALMOLOGICAL FINDINGS Routine aphthalmological examinations (inclading funduscopic) have been included in the regular physical evaminations af both the exposed ne and unexposed populations, Ta addition, special examinations for possible eifccts of radiation on the eves have been done at intervals by aphthalmnalogists accompanying the medical team, first ia Mav 1954 (2 months after the accident) and thea in 1955, 1956, 1957, 1998, 1959, 1962, 1964, 1907, 197i. and lo72, The routine examinations include testing of vision, accommodation, muscle balance, and pupillary reactions; external examination; and funduscopy. Vision is tested with the Suellen chart and the E-chaet when nevessary. Tntraocular tension has been measured when indicated, and color vision has been tested on several occasions. Special examinations have included slit-lamp and fundus phowgraphy. As part of the aging studies quantitative changes in certain eve characteristics roar ee ae a i, Sete a Ap a ae a w