Degeneracy: Its Causes, Signs and ResultsTalbot, Eugene S. (Eugene Solomon)
History
Degeneracy: Its Causes, Signs and Results
Talbot, Eugene S. (Eugene Solomon)
Abnormalities, Human; Degeneration; Heredity, Human
Cyclopia is very frequently associated with the absence of both the
internal and external ear, and with synotia (joined ears).
In triophthalmic cases the three eyes are usually separate, two occupying
the usual position, while the third is situated as illustrated in the case
cited. Ninety families of degenerates, averaging eleven children each, had
five cases of cyclops.
Degeneracy, which affects so deeply the development of the eye, naturally
tends to evince itself in other anomalous states in the organ. As
excessive asymmetry of the body is one of the most noticeable of the
stigmata of degeneracy, it is not astonishing to find that this asymmetry
expresses itself both in the position as well as in the size and structure
of the eye. As Kiernan[208] pointed out, twenty years ago, asymmetrical
irides are exceedingly frequent in the types of insanity due to hereditary
defect. This observation has since been confirmed by Féré,[209] not only
as to the insane, but as to other classes of the degenerate. The
conditions of the eye known as microphthalmia (small eye), macrophthalmia
(big eyes) and anophthalmia (absence of eyes), are found quite frequent in
degenerate families. Very frequently the pupil of the eye is asymmetrical.
This was pointed out by Kiernan in the case of Guiteau. Corectopia
(displacement of the pupil so that it is not in the centre of the iris)
often exists. Coloboma (eye fissure) is also not infrequent among the
degenerate. These vary greatly in situation and general results. The iris
is sometimes completely absent on one or both sides. Beside the anomalies,
diseased conditions like retinitis pigmentosa, congenital cataract and the
macular degeneracy cited by C. P. Pinckard,[210] of Chicago, are far from
infrequent expressions of degenerate taint in the eye; the organ in this
particular obeying the general law that degeneracy may show itself in the
minute change resulting in disturbance of function or in that producing
disease, or, finally, in atavism. The defects of the eyes requiring
glasses are exceedingly frequent in degenerates, and often aggravate their
morbidity. Here, as in the case of the teeth, the chief factor is often
ignored.
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