The Hazlehurst signal., 1883-12-27
ABOUT EYES AND THEIR AILIyGS,

H. y. kClltr, "a DCtTut frte Irtss.
ABOUT EYES AND THEIR AILINGS.
why 80 Many People Wear Giases-Coior
DIinincss AMI the Blind spot.
As one walks along the streets of a
large city. he would be- stupid indeed
who failed To notice the large and ap-
parcntly increasing number of people
who wear glasses for defective vision.
Tho number of those who 10 not wear
glasses. but whose vision is ncvcrthe-
less defective. is rs large. il not larger;
while cross-rycd people. which glasses
rs u rule do not improve; the color
blind, whom Scicuc is powcrlcSs 10
help, together with tnc sufferers from
irit., and con un,ivitis aud the other
kinds of tits; those afflicted with cat
aract, with .ranulaiion ot ;he lids, and
with all the forms OF sore eyes, make
an army 80 large that those persons
who do not have at least one game eye
are very rare indeed. lie who can
doctor an eye diseased. with greater or
lcss success, chargc hc ever - highly.
can always command more patients
than he can attend to.
a common notion among uncducatcd
people. whose eyes are in good cOndi-
tion. j. that Young people have no Use
for glasses, and that they wear them
''iust for style To those who arr
tngcd with this medicyalsn, il is IT.
specially suggested that they wear Il
pair of glasses for week and see ii
they are willing To undergo the incon-
ycnicncc for all the style in II millinery
store. II they try that invention Of the
Evil One. the noSc-pinchcrS, less than 4
week will be necessary. for the torment
ING things will gradually slide oil the
nose, II that organ is at all thick a. I'M
clincl To perspire. Nosc-gla,scs ar,
the abominatjOn To all oculiS,s. for they
know that with them no uniformity oI
position can bc attained a glass tC
be accurately fitted To an eve must
have its focal center in u line with the
center of the eye. The wcIrcr of the
cve-glass sticks that instrument Of tor
tiirc ON his nose in u many different
positions aS he can. with the lenses at al
conceivable angles. Then the bowed
glasses fret the ears and wear the bridg,
of the nose raw. The man who would
wear glasses for style would wear eal
icwclry aud corsctS.
Everybody who lives long enough ha'
TO use iar.sightcd or nagnifying glasses
The cause, as nearly as can bc StatcC
in popular language, Is rs follows
Directly back Of the pupil ot the eve
the blacS spot n the illiterate cOncciv,
il. the hole i'm the eye as an oculist con
cciycs il. is u little bit oi elastic Jelly
clear n crystal and shaped like lens
a circular muscle and an elastic li3a
ment hold this in place. When the ob
iect To be looked at is at u distance. thu
muscle rclaXes and the ligamcnt. whicl
j. elastic. stretches ont and ilattens th'
lens. When the Objest To be seen il
near at hand, the muscle contracts, th'
ligament ceases To strain upon the lens
which. being jelly-likc and elastic, trie:
10 get back to a globular shape. Al
old ace comes on this lens becomes
stillcr. and does not spring back into
the globular form. so that magnifyins
glasses have TO be added to get the i'm
are of any near object focused clearly
ON the retina at tie back Of The eye
The lenses in the eyes of children les
than live years old are so elastic tha
they can distinguish objects at less thar
three inches IRON the eve. As tn,
texture of the eye becomes denser ant
denScr from age, the lens becomes NOR,
and more opaque until cataract is fully
developed. When il is ready for tn,
opera, on, the eye is opened and th,
lens cut out. The patient can see dis
tinctly then only the objects in focu,
with the glasses he wears. General,
two pairs are used, one for distanc,
and one for reading and working
Colors are said To bc more brilliant I,
those eyes from which cataract ha'
been removed. In the band OF many
colorcd lights formed on the wall of ;
dark room by beam Of sunlight pas
sing through q prism, there are rays be
yond the violet which are invisible 4
most people, but affect photographer
sensitive paper. IL IL sa d that persons
who have had the lens of their eyes re
moved can perceive thess ultra viole
rays.
Inc Sruuuai Chaupo ih 'hO w "
age comes on is perfectly natural ant
Is no disease. but short-sightedness Is
disease of the eye. By constant strain
ing of the eye to see fine type or Ger
man or Greek letters, badly lighte'
school-rooms. together with insuiiicien
or improper food. the shape OF the ey'
beco. mes changed; 1t lengthens from
front to back, and the rays of ligh
which ought to come to focus in th'
back of the eye, focus little way II
front Of the back. A concave glass j
used to correct this defect by lengthcn
ing the focus so that it falls exactly ol
the right place. Sometimes it happen
that an eye Is heightened in one axi
more than another. SO that there Is
ridge. so to speak, across the eye
Then in that axis the patient is near
sighted and in the other axis his ey'
will be correct. People who have thi
defect are in the habit Of turning thei
head on one side To see an upright ob
lect plainly. "A telegraph POLE Away
looks crooked to them. II Is onl.