25
eral observation that the. Marshallese agefaster
than Americans. The incidence was higher in the
exposed group (36%) than in the unexposed group
The incidence of pinguecula and pterygium is
high in the Marshall Islands, and also slightly
higher in the exposed group than in the unexposed
did not show anysignificant differences between
higher incidence in the exposed group maybe related to contamination of the conjunctival sac
with fallout material at the time of the accident.
The incidence of abnormalities of the crystalline
lens is greater in the Marshall Islanders than in
similar age groups in the United States. Further-
(19%). However, recent analysis of aging criteria
exposed and unexposed groups.
Though diabetes mellitus has a moderately high
incidence in the Marshall Islanders, only one case
of diabetic retinopathy was noted. Thisis in keeping with the observationthatthe onset of diabetesin
the Marshallese occurs largely in older individuals.
(see Table 16). It has been postulated that the
more, the incidence of such abnormalities was
Table 16
Ophthalmological Survey, 1964
Exposed
No.
%
Number examined
63
Anisocoria
Anterior staphyloma
Arcussenilis
Argyll Robertson pupil
Chalazion
Choroiditis (old, healed with scars)
Conjunctivitis
Corneal pigment
l
1
25
1
1.40
1.40
36.70
1.40
3
1
2
4.20
1.40
2.80
1
1.40
Corneal scar
Opacities & cataract: presenile
Aphakia
Leprosy, eye signs of
Macular degeneration
Molluscum contagiosum
Melanomaofiris
Melanomaof conjunctiva
Nystagmus
Pinguecula
Pterygium
Phthisis bulbi
Positive Rhomberg
Retinal arteriosclerosis
Retinal scars
Retinal hemorrhage
Strabismus: Internal
External
Seventh nerve weakness
Vitreous opacities
590008
%
190
19.46
2
3
1.05
1.57
4,20
2
1.05
18
26.50
1
41
0.52
21.57
12
17.60
25
10.64
l
1.40
1
0.52
1
1.40
3
2.80
1
1.40
1
1.40
11
16.20
20
Proptosis
45
No.
37
2
.
Yo
0.52
1
senile
No.
Controls
1
3
Driisen
Duane’s syndrome
Lens: Polychromatic sheen
Children
of exposed
2
1
2
2
17
29.40
1
4
2
1
1.40
6.00
2.80
1.40
5
7.30
1.05
0.52
1.05
1.05
8.44
19.98
1
0.52
1
2
0.52
1.05
1
9
5
2.2
0.52
38
1
1
1.57
1
3
0.52
0.52
4.68
2.60
0.52
1.57