24 (visual acuity, arcus senilis, accommodation, retinal arteriosclerosis) have been recorded.8.13.32 1. General Findings has been found by others to be characteristic of people living on low coralatolls in the Pacific and is thoughtto be related to irritation of the eyes bv coral dust, salt water, and bright sunlight. The Somegeneralobservations on the eves of the Marshallese have indicated differences from the other major findings listed were related to general aging effects (loss of visual acuity, cataract forma- ethnic background andpossibly to environmental factors. The major eve findings for the past 5 years are listed in Table 14. The high incidence of pingueculae and pterygia is the most notable findinglisted in the table. This balance, etc.) and these appeared to occur to a lesser degree in the Marshallese than in Americans, althoughthe incidenceof arcus senilis and cataracts seemed higher. The Marshallese hadless myopia, aberrations of color vision, and ambly- eves of U.S. Caucasians which may berelated to tion, loss of accommodation, loss of ocular muscle Table 14 Ophthalmological Findings, 1970-1974 Rongelap and Ailingnae exposed (70%) Ocular condition Rongelap unexposed (133*) Utirik exposed (100*) No. % No. % No. % Anisocoria Arcus senilis \ 22 L.+ 31.5 0 34 0 25.5 0 21 0 21 Chalazion | 3 4.3 1 0.75 0 0 Conjunctivitis Corneal pigment Corneal scar Driisen 0 0 2 0 0 0 3.0 0 2 0 3 2 1.50 0 3.75 1.50 0 0 I 0 Enucleation Glaucoma,primary Glaucoma, secondary Lens: Cataracts 1 0 0 1.4 0 0 0 0 1 0 0 0.75 0 0 0 0 0 0 Argyll-Robertson pupil Choroiditis Congenital defects Enophthalmos Lenticular opacities Polychromatic sheen Macular degenerggion Nightvision impairment Nystagmus Phthisis bulbi Pinguecula Positive Romberg 1 20 2 0 1.4 3.0 3.0 0 0 2 0 0 0 1.50 0 0 0 1 0 l 19.5 20 20 7 10.0 13 10.0 17 17 2 0 1 ! 7 1 3.0 0 1.4 14 1 0 2 1.4 0 10.0 1.4 6 0 10.5 0.75 0 1.5 0 4.5 0 17 1 0 0 Retinalarteriosclerosis 11 15.7 ‘19 14.0 1 1 1.4 0 2 2 0 2 1 2 3.0 3.0 0 3.0 1.4 3.0 0 0 2 0 2 0 1 0 0 15 0 1.5 0 0.75 0 0 0 29 7 0 0 29 3.0 - 1 0 0 0.75 31.0 2 17 0 1 41 *Numberof people examined. 1 26 13.0 1.4 24.0 Xanthoma 0 ) 1 0 17.0 9 1 17 Retinal hemorrhages Retinal scars Retinopathy, diabetic Strabismus Uveitis Vitreous opacities l 0 12 Proptosis Pterygium Ptosis 0 0. 0 3 2 3 0 1 0 7 0 0 1 0 3 2? 3 0 1 0